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Document And Entity Information - shares	6 Months Ended
Document And Entity Information - shares	Jun. 30, 2018	Aug. 14, 2018
Document Information [Line Items]
Entity Registrant Name	CORETEC GROUP INC.
Entity Central Index Key	0001375195
Trading Symbol	crtg
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Common Stock, Shares Outstanding (in shares)		68,105,598
Document Type	10-Q
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q2
Amendment Flag	false

Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Cash	$ 30,528	$ 470,630
Prepaid expenses	13,412	35,358
Total current assets	43,940	505,988
Property and equipment, net	1,260	1,638
Other assets:
Patents, net	1,259,599	1,299,714
Goodwill	166,000	166,000
Deposits-other	2,315	2,315
Total other assets	1,427,914	1,468,029
Total Assets	1,473,114	1,975,655
Current liabilities:
Notes payable - related party, net of discount	1,477,078	1,262,434
Notes and debentures payable	63,675	110,788
Accounts payable and accrued expenses	514,062	755,481
Accrued interest payable - related party	359,846	258,815
Accrued interest payable	24,505	22,984
Total current liabilities	2,439,166	2,410,502
Notes payable - related party, net of current portion and discount		124,422
Total Liabilities	2,439,166	2,534,924
Stockholders' deficiency:
Preferred stock, Series A convertible, $0.0002 par value, 500,000 shares authorized; 345,000 shares issued and outstanding at June 30, 2018 and December 31, 2017, respectively	69	69
Common stock $0.0002 par value, 1,500,000,000 shares authorized; 67,979,605 and 66,785,428 shares issued and outstanding at June 30, 2018 and December 31, 2017, respectively	13,596	13,357
Additional paid-in capital	2,141,838	2,020,642
Accumulated deficit	(3,121,555)	(2,593,337)
Total Stockholders' Deficiency	(966,052)	(559,269)
Total Liabilities and Stockholders' Deficiency	$ 1,473,114	$ 1,975,655

Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares	Jun. 30, 2018	Dec. 31, 2017
Preferred stock, par value (in dollars per share)	$ 0.0002	$ 0.0002
Preferred stock, shares authorized (in shares)	500,000	500,000
Preferred stock, shares issued (in shares)	345,000	345,000
Preferred stock, shares outstanding (in shares)	345,000	345,000
Common stock, par value (in dollars per share)	$ 0.0002	$ 0.0002
Common stock, shares authorized (in shares)	1,500,000,000	1,500,000,000
Common stock, shares issued (in shares)	67,979,605	66,785,428
Common stock, shares outstanding (in shares)	67,979,605	66,785,428

Condensed Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Income:
Revenue
Expenses:
Research and development	21,182	155,437	42,100	260,807
General and administrative	211,829	315,489	433,129	596,820
Interest	96,442	81,497	192,778	123,663
Total expenses	329,453	552,423	668,007	981,290
Other income:
Gain on settlemment of accounts payable	139,789		139,789
Net loss	$ (189,664)	$ (552,423)	$ (528,218)	$ (981,290)
Loss per share:
Basic and diluted (in dollars per share)	$ (0.003)	$ (0.112)	$ (0.008)	$ (0.199)
Weighted average shares outstanding, basic and diluted (in shares)	67,744,239	4,939,182	67,512,716	4,939,182

Condensed Consolidated Statement of Changes in Stockholders' Deficiency (Unaudited) - USD ($)	3 Months Ended	6 Months Ended	37 Months Ended
	Jun. 30, 2018	Jun. 30, 2018	Jun. 30, 2018
Preferred Stock [Member] \| Series A Preferred Stock [Member]
Balance (in shares)		345,000
Balance		$ 69
Balance (in shares)	345,000	345,000	345,000
Balance	$ 69	$ 69	$ 69
Common Stock [Member]
Balance (in shares)		66,785,428
Balance		$ 13,357
Debentures converted to common stock (in shares)		641,253
Debentures converted to common stock		$ 128
Common stock issued for liabilities (in shares)		552,924
Common stock issued for liabilities		$ 111
Balance (in shares)	67,979,605	67,979,605	67,979,605
Balance	$ 13,596	$ 13,596	$ 13,596
Additional Paid-in Capital [Member]
Balance		2,020,642
Warrants exercised		49,106
Debentures converted to common stock		322
Common stock issued for liabilities		71,768
Balance	2,141,838	2,141,838	2,141,838
Retained Earnings [Member]
Balance		(2,593,337)
Net loss		(528,218)
Balance	(3,121,555)	(3,121,555)	(3,121,555)
Balance		(559,269)
Warrants exercised		49,106
Debentures converted to common stock		450
Common stock issued for liabilities		71,879
Net loss	(189,664)	(528,218)	(3,121,555)
Balance	$ (966,052)	$ (966,052)	$ (966,052)

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash Flows from Operating Activities
Net loss	$ (528,218)	$ (981,290)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	378	498
Amortization - intangible assets	40,116	46,782
Amortization - debt discount	90,222	34,200
Options issued for common stock		50,000
Gain on settlement of accounts payable	(139,789)
Loss on sale of property and equipment		3,259
Change in:
Prepaid expenses	21,946	29,390
Accounts payable and accrued liabilities	72,801	359,702
Net cash used in operating activities	(442,544)	(457,459)
Cash Flows from Investing Activities
Purchase of property and equipment		(2,268)
Proceeds from sale of property and equipment		2,500
Net cash provided by investing activities		232
Cash Flows from Financing Activities
Payment on insurance premium financing	(21,323)	(24,794)
Proceeds from exercise of warrants	23,765
Proceeds from note payable-related party		486,750
Net cash provided by financing activities	2,442	461,956
Net change in cash	(440,102)	4,729
Cash, beginning of period	470,630	594
Cash, end of period	30,528	5,323
Supplemental Disclosure of Cash Flow Information
Cash paid during the period for interest	210	626
Non-cash Investing and Financing Activities
Debentures and warrants converted to common stock	25,791
Common stock issued for liabilities	$ 71,879

Note 1 - Business Organization, Nature of Business and Basis of Presentation	6 Months Ended
	Jun. 30, 2018
Notes to Financial Statements
Business Description and Basis of Presentation [Text Block]	Note 1 – Business Organization, Nature of Business and Basis of Presentation Nature of Business The Coretec Group Inc. (the “Group”) (formerly 3DIcon Corporation) ( “3DIcon” ) was incorporated on August 11, 1995, under the laws of the State of Oklahoma as First Keating Corporation. The articles of incorporation were amended August 1, 2003 to change the name to 3DIcon Corporation. During 2001, First Keating Corporation began to focus on the development of 360 -degree holographic technology. From January 1, 2001, 3DIcon’s primary activity has been the raising of capital in order to pursue its goal of becoming a significant participant in the development, commercialization and marketing of next generation 3D display technologies. Coretec Industries, LLC (“Coretec”), a wholly owned subsidiary of the Group (collectively the “Company”), was organized on June 2, 2015 in the state of North Dakota. Coretec is currently developing, testing, and providing new and/or improved technologies, products, and service solutions for energy-related industries including, but not limited to oil/gas, renewable energy, and distributed energy industries. Many of these technologies and products also have application for medical, electronic, photonic, display, and lighting markets among others. Early adoption of these technologies and products is anticipated in markets for energy storage (Li-ion batteries), renewable energy (BIPV), and electronics (Asset Monitoring). Reverse Acquisition On May 31, 2016, the Group entered into a Share Exchange Agreement (the “Share Exchange Agreement”) with Coretec and four Coretec members (the “Members”), which Members held all outstanding membership interests in Coretec. On September 30, 2016 ( the “Closing Date”), the Group closed the transaction contemplated by the Share Exchange Agreement. Pursuant to the Share Exchange Agreement, the Members agreed to sell all their membership interests in Coretec to the Group in exchange for the Group’s issuance of an aggregate 4,760,872 shares of the Group’s Series B Convertible Preferred Stock to the Members (the “Exchange”). Coretec became a wholly-owned subsidiary of the Group and the former Members beneficially owned approximately 65% of the Group’s common stock on a fully-diluted basis on the Closing Date. Upon the closing of the Share Exchange Agreement, two of the Group’s Directors resigned and three new Directors associated with Coretec were nominated and elected, giving control of the board of directors to former Coretec Members. Authorization of Reverse Stock Split On February 21, 2017 ( the “Record Date”), the Board of Directors unanimously approved, and a majority of the Company’s stockholders, as of the Record Date, approved by written consent pursuant to Section 18 - 1073 of the Oklahoma Act, to permit the Company’s Board of Directors, in its sole discretion, to effectuate one or more consolidations of the issued and outstanding shares of common stock at some future date no later than the first anniversary of the Record Date, pursuant to which the shares of common stock would be combined and reclassified into one validly issued fully paid and non-assessable share of common stock at a ratio (the “Reverse Split Ratio”) within the range of 1 -for- 50 and up to 1 -for- 300 (the “Reverse Split Range”), with each stockholder otherwise entitled to receive a fractional share of common stock as a result of the Reverse Stock Split. Effective June 28, 2017, a Reverse Stock Split pursuant to the maximum stated Reverse Split Ratio, each 300 shares of our issued and outstanding common stock was automatically converted into 1 share of common stock Basis of Presentation The accompanying condensed consolidated financial statements of the Company have been prepared without audit pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures normally included in the consolidated financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been condensed or omitted pursuant to such rules and regulations. The Company believes that the disclosures made are adequate to make the information presented not misleading. These condensed consolidated financial statements should be read in conjunction with the Company’s year-end audited consolidated financial statements and related footnotes included in the previously filed Form 10 -K, and in the opinion of management, reflects all adjustments necessary to present fairly the condensed consolidated financial position of the Company. The condensed consolidated results of operations for interim periods may not be indicative of the results which may be realized for the full year.

Note 3 - Summary of Significant Accounting Policies

6 Months Ended

Jun. 30, 2018

Notes to Financial Statements

Significant Accounting Policies [Text Block]

Note

– Summary of Significant Accounting Policies

Principles of Consolidation

The condensed consolidated financial statements include the accounts of the Group and its wholly owned subsidiary, Coretec. Intercompany transactions and balances have been eliminated in consolidation.

Use of Estimates

The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues, expenses and the disclosure of contingent assets and liabilities. Actual results could differ from the estimates and assumptions used.

Long-Lived Assets

Long-lived assets, such as property and equipment and intangible assets, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset

may

not

be recoverable. If circumstances require a long-lived asset or asset group be tested for possible impairment, the Company

first

compares undiscounted cash flows expected to be generated by that asset or asset group to its carrying value. If the carrying value of the long-lived asset or asset group is

not

recoverable on an undiscounted cash flow basis, impairment is recognized to the extent that the carrying value exceeds its fair value. Fair value is determined through various valuation techniques including discounted cash flow models, quoted market values and

third

party independent appraisals, as considered necessary.

Fair Value of Financial Instruments

The following methods and assumptions were used to estimate the fair value of each class of financial instrument held by the Company:

Current assets and current liabilities

- The carrying value approximates fair value due to the short maturity of these items.

Notes payable

The fair value of the Company’s notes payable has been estimated by the Company based upon the liability’s characteristics, including interest rate. The carrying value approximates fair value.

Beneficial Conversion Feature of Convertible Notes Payable

The Company accounts for convertible notes payable in accordance with the guidelines established by the Financial Accounting Standards Board’s (“FASB”) Accounting Standards Codification (“ASC”) Topic

470

20,

Debt with Conversion and Other Options, Emerging Issues Task Force ("EITF")

Accounting for Convertible Securities with Beneficial Conversion Features or Contingently Adjustable Conversion Ratios, and EITF

27,

Application of Issue

To Certain Convertible Instruments. The beneficial conversion feature of a convertible note is normally characterized as the convertible portion or feature of certain notes payable that provide a rate of conversion that is below market value or in-the-money when issued. The Company records a beneficial conversion feature related to the issuance of a convertible note when issued.

The beneficial conversion feature of a convertible note is credited to additional paid-in-capital. The intrinsic value is recorded in the consolidated financial statements as a debt discount and such discount is amortized over the expected term of the convertible note and is charged to interest expense.

Basic and Diluted Loss Per Common Share

Basic loss per common share is computed by dividing net loss by the weighted average number of vested common shares outstanding during the period. Diluted loss per share reflects the potential dilution that could occur if securities or other instruments to issue common stock were exercised or converted into common stock.

Basic and diluted loss per shares are calculated the same for all periods presented due to the net loss. The following securities are excluded from the calculation of weighted average dilutive common shares because their inclusion would have been anti-dilutive:

	June 30 ,
	2018		2017
Options		2,883,379		284,166
Warrants		1,061		65,228
Series A convertible preferred stock		115,000		115,000
Series B convertible preferred stock		-		41,842,241
Convertible debentures		107,185,742		61,122,346
Total potentially dilutive shares		110,185,182		103,428,981

Subsequent Events

The Company evaluates events that have occurred after the balance sheet date but before the condensed consolidated financial statements are issued. Based upon the evaluation, the Company did

not

identify any recognized or non-recognized subsequent events that would have required adjustment or disclosure in the condensed consolidated financial statements, except as disclosed in Note

Recent Accounting Pronouncements

The following is a summary of recent accounting pronouncements that are relevant to the Company:

June 2018,

the Financial Accounting Standards Board (“FASB”) issued ASU

No.

2018

–

Compensation – Stock Compensation (Topic

718

): Improvements to Non-Employee Share-Based Payment Accounting

. The new guidance aligns the requirements for nonemployee share-based payments with the requirements for employee share-based payments. The Company does

not

expect the amendment, which is effective beginning with our

2019

fiscal year, to have a material impact on our consolidated financial statements.

January 2016,

the FASB issued ASU

No.

2016

01,

Financial Instruments – Overall (Subtopic

825

): Recognition and Measurement of Financial Assets and Financial Liabilities

(“ASU

2016

01”

). ASU

2016

addresses certain aspects of recognition, measurement, presentation and disclosure of financial instruments, specifically equity investments and financial instruments measured at amortized cost. ASU

2016

is effective for public companies for annual and interim periods beginning after

December 15, 2017.

ASU

2016

did

not

have a material impact on the Company’s financial statements.

August 2016,

the FASB issued ASU

No.

2016

15,

Statement of Cash Flows (Topic

230

): Classification of Certain Cash Receipts and Cash Payments

(“ASU

2016

15”

). ASU

2016

will make

eight

targeted changes to how cash receipts and cash payments are presented and classified in the statement of cash flows. ASU

2016

is effective for public companies for interim and annual periods beginning after

December 15, 2017,

with early adoption permitted. The new standard will require adoption on a retrospective basis unless it is impracticable to apply, in which case it would be required to apply the amendments prospectively as of the earliest date practicable. ASU

2016

did

not

have a material impact on the Company’s cash flows.

February 2016,

the FASB issued accounting standards update (ASU)

No.

2016

02,

Leases (Topic

842

)

intended to increase transparency and comparability among companies by requiring most leases to be included on the balance sheet and by expanding disclosure requirements. This is effective for public business entities for fiscal years beginning after

December 15, 2018,

including interim periods within those fiscal years. Early application is permitted for all public business entities and all nonpublic business entities upon issuance. The Company is currently evaluating the impact that this new guidance

may

have on its consolidated results of operations, cash flows, financial position and disclosures.

The FASB has issued ASU

2014

09,

Revenue from Contracts with Customers

. This ASU supersedes the revenue recognition requirements in FASB ASC

605

- Revenue Recognition and most industry-specific guidance throughout the Codification. The standard requires that an entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. On

July 9, 2015,

the FASB deferred the effective date of ASU

No.

2014

from annual periods beginning after

December 15, 2016

to annual periods beginning after

December 15, 2017.

This ASU should be applied retrospectively to each prior reporting period presented or retrospectively with the cumulative effect of initially applying the ASU recognized at the date of initial application. The adoption of this standard did

not

have a material impact on the Company’s consolidated financial position and results of operations because the Company currently has

revenue.

January 2017,

the FASB issued ASU

2017

01,

Business Combinations (Topic

805

): Clarifying the Definition of a Business

. This ASU provides a screen to determine when a set is

not

a business. The screen requires that when substantially all of the fair value of gross assets acquired (or disposed of) is concentrated in a single identifiable asset or a group of similar identifiable assets, the set is

not

a business. The amendments in this ASU are effective beginning after

December 15, 2017,

including interim periods within those periods and should be applied prospectively. The adoption of this standard did

not

have a material impact on its consolidated financial position and results of operations.

January 2017,

the FASB issued ASU

2017

04,

Intangibles – Goodwill and Other (Topic

350

): Simplifying the Test for Goodwill Impairment

. This ASU simplifies the subsequent measurement of goodwill by eliminating Step

from the goodwill test. Under Step

an entity had to perform procedures to determine the fair value at the impairment testing date of its assets and labilities following the procedure that would be required in determining the fair value of assets acquired and labilities assumed in a business combination. Instead, an entity should perform its annual, or interim goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. The amendments in this ASU are effective beginning after

December 15, 2019,

however early adoption is permitted beginning

January 1, 2017

and should be applied on a prospective basis. The Company does

not

anticipate that the adoption of this standard will have a material impact on its consolidated financial position and results of operations.

Note 4 - Debentures and Notes Payable

6 Months Ended

Jun. 30, 2018

Notes to Financial Statements

Debt Disclosure [Text Block]

Note

– Debentures and Notes Payable

	June 30 ,			December 31,
	2018			2017
Notes and debentures payable:
5.25% Insurance premium finance agreement due June 2018	$	-		$	21,323
9% Promissory note due June 2018		-			25,341
4.75% Convertible debenture due September 2018		63,675			64,124
Total notes and debentures payable	$	63,675		$	110,788

Notes payable - related party:
14% Term loan due June 2019	$	264,993		$	264,993
14% Term loan due June 2019		596,500			596,500
14% Term loan due June 2019		400,941			400,941
7% Convertible promissory note due March 2019, net		163,407			98,187
7% Convertible promissory note due June 2019, net		51,237			26,235
Total notes payable - related party		1,477,078			1,386,856
Less current portion		(1,477,078	)		(1,262,434	)
Long term debt	$	-		$	124,422

5.25%

Insurance premium finance agreement, due

June 2018

The Company entered into an insurance financing agreement in

2017

totaling

$37,711

due

June 2018

and made payments of

$21,323

during the

six

months ended

June 30, 2018.

Promissory note due

June 2018

April 26, 2016,

the Company signed a

promissory note with Golden State in the amount of

$40,000.

Golden State advanced the

$40,000

on the note and, on

June 16, 2016,

applied

$14,659

to fund the exercise of warrants under the terms of the

4.75%

convertible debenture (described below) held by Golden State, leaving

$25,341

outstanding on the

promissory note as of

December 31, 2017.

During the

six

months ended

June 30, 2018,

Golden State applied

$25,341

to fund the exercise of warrants under the terms of the

4.75%

convertible debenture.

4.75%

Convertible debenture due

September 2018

November 3, 2006,

the Company issued to Golden State a

4.75%

convertible debenture in a principal amount of

$100,000,

due

December 31, 2014

and subsequently extended to

September 30, 2018

and warrants to buy

post-split equivalent shares of common stock at a post-split exercise price of

$114,450

per share. In connection with each conversion, Golden State is expected to simultaneously exercise a percentage of warrants equal to the percentage of the principal being converted. On

January 8, 2018,

Golden State converted

$225

of the

4.75%

convertible debenture into

244,618

shares of common stock at

$0.0009

per share and exercised

0.2143

warrants at

$114,450

per share for

$24,525.

May 24, 2018,

Golden State converted

$225

of the

4.75%

convertible debenture into

396,635

shares of common stock at

$0.0006

per share and exercised

0.2143

warrants at

$114,450

per share for

$24,581.

14%

Term loan due

June

201

, related party

April 18 2016,

the Company entered into an unsecured loan agreement whereby Carlton James North Dakota Limited ("CJNDL”) agreed to provide the Company a loan facility of up to

$100,000.

Under the terms of the agreement, the Company shall pay interest on the outstanding unpaid balance at the rate of

1.167%

per month. The interest is due quarterly, and the principal is due

June 29, 2019.

CJNDL has advanced

$264,993

(

$164,993

in excess of the facility) on the loan as of

June 30, 2018.

During

2017,

CJND agreed that the excess amount funded to and any future funding under the loan will be done on the same terms and conditions as the original note.

14%

Term loan

due

June

201

, related party

February 24, 2016,

the Company entered into an unsecured loan agreement whereby Victor Keen, Co-Chairman of the Company (“Keen”) agreed to provide the Company a loan facility of up to

$300,000.

Under the terms of the agreement, the Company shall pay interest on the outstanding unpaid balance at the rate of

1.167%

per month. The interest is due quarterly, and the principal is due

June 29, 2019.

Keen has advanced

$596,500

(

$276,500

in excess of the facility) on the loan through

June 30, 2018.

During

2017,

Keen agreed that the excess amount funded and any future funding under the loan will be done on the same terms and conditions as the original note.

14%

Term loan due

June

201

, related party

June 1, 2015,

Coretec obtained a

$500,000

revolving note agreement with CJNDL. The total amount of borrowings by Coretec shall

not

exceed

$500,000.

Coretec accrues interest on the outstanding balance at the rate of

1.167%

per month, payable on a quarterly basis. CJNDL has advanced

$400,941

on the loan. Outstanding borrowings are secured by substantially all assets of the Company. The note is due on

June 29, 2019.

Convertible promissory note due

March 2019,

related party

March 30, 2017,

the Company issued to Mr. Victor Keen, Co-Chairman of the Board of Directors, a

convertible promissory note in a principal amount of

$250,000,

due

March 1, 2019 (

“Maturity Date”). The promissory note shall automatically convert into

eight

percent (

) of the fully diluted outstanding shares of common stock of the Company calculated after giving effect to (a) the exercise of all outstanding options, warrants or other rights to acquire shares of common stock of the Company, (b) the conversion of all outstanding convertible or exchangeable securities, and (c) after giving effect to the issuance of common stock upon conversion of this note (the “Conversion Shares”). The conversion shall

not

occur until both of the following

two

events shall have occurred (the “Conversion Event”): (i) the consummation of the Reverse Split by the Company as reflected in the Preliminary Information Statement filed with the Securities and Exchange Commission on

March 7, 2017,

and (ii) the conversion of all the Company’s issued and outstanding Series A Convertible Preferred Stock and Series B Convertible Preferred Stock into the Conversion Shares. If the Conversion Event has

not

occurred prior to the earlier to occur of the Maturity Date and the occurrence of an event of default, then this note shall

not

be automatically converted into the Conversion Shares and Mr. Victor Keen

may

elect, at his sole discretion, (i) to have the outstanding principal balance of this note converted into the Conversion Shares; or (ii) to declare the outstanding principal balance of this note, together with all accrued interest, be paid in accordance with the terms of the note. Such election

may

be made at any time on or following the Maturity Date or the occurrence of an event of default. This note is an unsecured obligation of the Company. The embedded conversion option was deemed to be a beneficial conversion feature because the active conversion price was less than the commitment date market price of the common stock. The dollar amount of the beneficial conversion feature is limited to the carrying value of the promissory note, so a

$250,000

debt discount was recorded, with a corresponding credit to additional paid-in capital for the beneficial conversion feature. The debt discount is being amortized over the life of the debt and

$65,220

and

$32,967

was amortized during the

six

months ended

June 30, 2018

and

2017

respectively.

Convertible promissory note due

June 2019,

related party

June 21, 2017,

the Company issued to Mr. Victor Keen, Co-Chairman of the Board of Directors, a

convertible promissory note in a principal amount of

$100,000,

due

June 21, 2019.

The promissory note shall automatically convert into

four

percent (

not

occur until both of the following

two

March 7, 2017,

and (ii) the conversion of all of the Company’s issued and outstanding Series A Convertible Preferred Stock and Series B Convertible Preferred Stock into the Conversion Shares. If the Conversion Event has

not

occurred prior to the earlier to occur of the Maturity Date and the occurrence of an event of default, then this note shall

not

be automatically converted into the Conversion Shares and Mr. Victor Keen

may

$100,000

debt discount was recorded, with a corresponding credit to additional paid-in capital for the beneficial conversion feature. The debt discount is being amortized over the life of the debt and

$25,002

and

$1,233

was amortized during the

six

months ended

June 30, 2018

and

2017

respectively.

Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2018

Accounting Policies [Abstract]

Nature of Business [Policy Text Block]

Nature of Business

The Coretec Group Inc. (the “Group”) (formerly

3DIcon

Corporation) (

“3DIcon”

) was incorporated on

August 11, 1995,

under the laws of the State of Oklahoma as First Keating Corporation. The articles of incorporation were amended

August 1, 2003

to change the name to

3DIcon

Corporation. During

2001,

First Keating Corporation began to focus on the development of

360

-degree holographic technology. From

January 1, 2001,

3DIcon’s

primary activity has been the raising of capital in order to pursue its goal of becoming a significant participant in the development, commercialization and marketing of next generation

display technologies.

Coretec Industries, LLC (“Coretec”), a wholly owned subsidiary of the Group (collectively the “Company”), was organized on

June 2, 2015

in the state of North Dakota. Coretec is currently developing, testing, and providing new and/or improved technologies, products, and service solutions for energy-related industries including, but

not

limited to oil/gas, renewable energy, and distributed energy industries. Many of these technologies and products also have application for medical, electronic, photonic, display, and lighting markets among others. Early adoption of these technologies and products is anticipated in markets for energy storage (Li-ion batteries), renewable energy (BIPV), and electronics (Asset Monitoring).

Business Combinations Policy [Policy Text Block]

Reverse Acquisition

May 31, 2016,

the Group entered into a Share Exchange Agreement (the “Share Exchange Agreement”) with Coretec and

four

Coretec members (the “Members”), which Members held all outstanding membership interests in Coretec. On

September 30, 2016 (

the “Closing Date”), the Group closed the transaction contemplated by the Share Exchange Agreement. Pursuant to the Share Exchange Agreement, the Members agreed to sell all their membership interests in Coretec to the Group in exchange for the Group’s issuance of an aggregate

4,760,872

shares of the Group’s Series B Convertible Preferred Stock to the Members (the “Exchange”). Coretec became a wholly-owned subsidiary of the Group and the former Members beneficially owned approximately

65%

of the Group’s common stock on a fully-diluted basis on the Closing Date. Upon the closing of the Share Exchange Agreement,

two

of the Group’s Directors resigned and

three

new Directors associated with Coretec were nominated and elected, giving control of the board of directors to former Coretec Members.

Authorization of Reverse Stock Split, Policy [Policy Text Block]

Authorization of Reverse Stock Split

February 21, 2017 (

the “Record Date”), the Board of Directors unanimously approved, and a majority of the Company’s stockholders, as of the Record Date, approved by written consent pursuant to Section

1073

of the Oklahoma Act, to permit the Company’s Board of Directors, in its sole discretion, to effectuate

one

or more consolidations of the issued and outstanding shares of common stock at some future date

later than the

first

anniversary of the Record Date, pursuant to which the shares of common stock would be combined and reclassified into

one

validly issued fully paid and non-assessable share of common stock at a ratio (the “Reverse Split Ratio”) within the range of

-for-

and up to

-for-

300

(the “Reverse Split Range”), with each stockholder otherwise entitled to receive a fractional share of common stock as a result of the Reverse Stock Split. Effective

June 28, 2017,

a Reverse Stock Split pursuant to the maximum stated Reverse Split Ratio, each

300

shares of our issued and outstanding common stock was automatically converted into

share of common stock

Basis of Accounting, Policy [Policy Text Block]

Basis of Presentation

The accompanying condensed consolidated financial statements of the Company have been prepared without audit pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures normally included in the consolidated financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been condensed or omitted pursuant to such rules and regulations. The Company believes that the disclosures made are adequate to make the information presented

not

misleading. These condensed consolidated financial statements should be read in conjunction with the Company’s year-end audited consolidated financial statements and related footnotes included in the previously filed Form

-K, and in the opinion of management, reflects all adjustments necessary to present fairly the condensed consolidated financial position of the Company. The condensed consolidated results of operations for interim periods

may

not

be indicative of the results which

may

be realized for the full year.

Consolidation, Policy [Policy Text Block]

Principles of Consolidation

Use of Estimates, Policy [Policy Text Block]

Use of Estimates

Impairment or Disposal of Long-Lived Assets, Including Intangible Assets, Policy [Policy Text Block]

Long-Lived Assets

Long-lived assets, such as property and equipment and intangible assets, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset

may

not

be recoverable. If circumstances require a long-lived asset or asset group be tested for possible impairment, the Company

first

compares undiscounted cash flows expected to be generated by that asset or asset group to its carrying value. If the carrying value of the long-lived asset or asset group is

not

third

party independent appraisals, as considered necessary.

Fair Value of Financial Instruments, Policy [Policy Text Block]

Fair Value of Financial Instruments

The following methods and assumptions were used to estimate the fair value of each class of financial instrument held by the Company:

Current assets and current liabilities

- The carrying value approximates fair value due to the short maturity of these items.

Notes payable

The fair value of the Company’s notes payable has been estimated by the Company based upon the liability’s characteristics, including interest rate. The carrying value approximates fair value.

Debt, Policy [Policy Text Block]

Beneficial Conversion Feature of Convertible Notes Payable

470

20,

Debt with Conversion and Other Options, Emerging Issues Task Force ("EITF")

Accounting for Convertible Securities with Beneficial Conversion Features or Contingently Adjustable Conversion Ratios, and EITF

27,

Application of Issue

Earnings Per Share, Policy [Policy Text Block]

Basic and Diluted Loss Per Common Share

	June 30 ,
	2018		2017
Options		2,883,379		284,166
Warrants		1,061		65,228
Series A convertible preferred stock		115,000		115,000
Series B convertible preferred stock		-		41,842,241
Convertible debentures		107,185,742		61,122,346
Total potentially dilutive shares		110,185,182		103,428,981

Subsequent Events, Policy [Policy Text Block]

Subsequent Events

The Company evaluates events that have occurred after the balance sheet date but before the condensed consolidated financial statements are issued. Based upon the evaluation, the Company did

not

identify any recognized or non-recognized subsequent events that would have required adjustment or disclosure in the condensed consolidated financial statements, except as disclosed in Note

New Accounting Pronouncements, Policy [Policy Text Block]

Recent Accounting Pronouncements

The following is a summary of recent accounting pronouncements that are relevant to the Company:

June 2018,

the Financial Accounting Standards Board (“FASB”) issued ASU

No.

2018

–

Compensation – Stock Compensation (Topic

718

): Improvements to Non-Employee Share-Based Payment Accounting

. The new guidance aligns the requirements for nonemployee share-based payments with the requirements for employee share-based payments. The Company does

not

expect the amendment, which is effective beginning with our

2019

fiscal year, to have a material impact on our consolidated financial statements.

January 2016,

the FASB issued ASU

No.

2016

01,

Financial Instruments – Overall (Subtopic

825

): Recognition and Measurement of Financial Assets and Financial Liabilities

(“ASU

2016

01”

). ASU

2016

addresses certain aspects of recognition, measurement, presentation and disclosure of financial instruments, specifically equity investments and financial instruments measured at amortized cost. ASU

2016

is effective for public companies for annual and interim periods beginning after

December 15, 2017.

ASU

2016

did

not

have a material impact on the Company’s financial statements.

August 2016,

the FASB issued ASU

No.

2016

15,

Statement of Cash Flows (Topic

230

): Classification of Certain Cash Receipts and Cash Payments

(“ASU

2016

15”

). ASU

2016

will make

eight

targeted changes to how cash receipts and cash payments are presented and classified in the statement of cash flows. ASU

2016

is effective for public companies for interim and annual periods beginning after

December 15, 2017,

2016

did

not

have a material impact on the Company’s cash flows.

February 2016,

the FASB issued accounting standards update (ASU)

No.

2016

02,

Leases (Topic

842

)

December 15, 2018,

may

have on its consolidated results of operations, cash flows, financial position and disclosures.

The FASB has issued ASU

2014

09,

Revenue from Contracts with Customers

. This ASU supersedes the revenue recognition requirements in FASB ASC

605

July 9, 2015,

the FASB deferred the effective date of ASU

No.

2014

from annual periods beginning after

December 15, 2016

to annual periods beginning after

December 15, 2017.

not

have a material impact on the Company’s consolidated financial position and results of operations because the Company currently has

revenue.

January 2017,

the FASB issued ASU

2017

01,

Business Combinations (Topic

805

): Clarifying the Definition of a Business

. This ASU provides a screen to determine when a set is

not

a business. The amendments in this ASU are effective beginning after

December 15, 2017,

including interim periods within those periods and should be applied prospectively. The adoption of this standard did

not

have a material impact on its consolidated financial position and results of operations.

January 2017,

the FASB issued ASU

2017

04,

Intangibles – Goodwill and Other (Topic

350

): Simplifying the Test for Goodwill Impairment

. This ASU simplifies the subsequent measurement of goodwill by eliminating Step

from the goodwill test. Under Step

December 15, 2019,

however early adoption is permitted beginning

January 1, 2017

and should be applied on a prospective basis. The Company does

not

anticipate that the adoption of this standard will have a material impact on its consolidated financial position and results of operations.

Note 4 - Debentures and Notes Payable (Details Textual) - USD ($)						6 Months Ended
	May 24, 2018	Jan. 08, 2018	Jun. 21, 2017	Mar. 30, 2017	Jun. 16, 2016	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017	Aug. 25, 2017	Apr. 26, 2016	Apr. 18, 2016	Feb. 24, 2016	Jun. 01, 2015	Nov. 03, 2006
Debt Instrument, Interest Rate, Stated Percentage										4.75%
Proceeds from Warrant Exercises						$ 23,765
Notes Payable, Related Parties						1,477,078		$ 1,386,856
Amortization of Debt Discount (Premium)						$ 90,222	34,200
Conversion from Convertible Debenture to Common Stock [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 114,450
Debt Conversion, Original Debt, Amount	$ 225	$ 225
Debt Conversion, Converted Instrument, Shares Issued	396,635	244,618
Debt Instrument, Convertible, Conversion Price	$ 0.0006	$ 0.0009
Class of Warrant or Right, Exercised During Period	0.2143
Proceeds from Warrant Exercises	$ 24,581
Warrants in Connection with 4.75% Convertible Debenture Due June 2018 [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights														61
Class of Warrant or Right, Exercise Price of Warrants or Rights		$ 114,450												$ 114,450
Class of Warrant or Right, Exercised During Period		0.2143
Proceeds from Warrant Exercises		$ 24,525
Five Point Two Five Percent Insurance Premium Finance Agreement, Due June 2018 [Member]
Debt Instrument, Interest Rate, Stated Percentage						5.25%
Debt Instrument, Face Amount									$ 37,711
Repayments of Debt						$ 21,323
Nine Percent Promissory Note Due June 2018 [Member]
Debt Instrument, Interest Rate, Stated Percentage										9.00%
Debt Instrument, Face Amount										$ 40,000
Long-term Debt, Gross										$ 40,000
Debt Instruments, Proceeds from Notes to Fund Exercise of Warrants					$ 14,659	25,341
Long-term Debt, Total								25,341
Four Point Seventy Five Percent Convertible Debenture Due June 2018 [Member]
Debt Instrument, Interest Rate, Stated Percentage														4.75%
Debt Instrument, Face Amount														$ 100,000
Fourteen Percent Term Loan Due June 2018, One [Member]
Notes Payable, Related Parties						264,993		264,993
Fourteen Percent Term Loan Due June 2018, One [Member] \| Carlton James North Dakota Limited [Member]
Debt Instrument, Interest Rate, Stated Percentage											14.00%
Debt Agreement, Maximum Borrowing Capacity											$ 100,000
Debt Instrument, Interest Rate, Monthly											1.167%
Notes Payable, Related Parties						264,993
Debt Instrument, Advances in Excess of Facility Limit						164,993
Fourteen Percent Term Loan Due June 2018, Two [Member]
Notes Payable, Related Parties						596,500		596,500
Fourteen Percent Term Loan Due June 2018, Two [Member] \| Co-chairman of Board of Directors [Member]
Debt Instrument, Interest Rate, Stated Percentage												14.00%
Debt Agreement, Maximum Borrowing Capacity												$ 300,000
Debt Instrument, Interest Rate, Monthly												1.167%
Notes Payable, Related Parties								596,500
Debt Instrument, Advances in Excess of Facility Limit								276,500
Fourteen Percent Term Loan Due June 2018, Three [Member]
Notes Payable, Related Parties						400,941		400,941
Fourteen Percent Term Loan Due June 2018, Three [Member] \| Carlton James North Dakota Limited [Member]
Debt Instrument, Interest Rate, Stated Percentage													14.00%
Debt Instrument, Face Amount													$ 500,000
Debt Agreement, Maximum Borrowing Capacity													$ 500,000
Debt Instrument, Interest Rate, Monthly													1.167%
Notes Payable, Related Parties						400,941
Seven Percent Convertible Promissory Note Due March 2019, Related Party [Member] \| Co-chairman of Board of Directors [Member]
Debt Instrument, Interest Rate, Stated Percentage				7.00%
Debt Instrument, Face Amount				$ 250,000
Debt Instrument, Convertible, Conversion Percentage				8.00%
Debt Instrument, Unamortized Discount, Total				$ 250,000
Amortization of Debt Discount (Premium)						65,220	32,967
Seven Percent Convertible Promissory Note Due June 2019 [Member]
Notes Payable, Related Parties						51,237		$ 26,235
Seven Percent Convertible Promissory Note Due June 2019 [Member] \| Co-chairman of Board of Directors [Member]
Debt Instrument, Interest Rate, Stated Percentage			7.00%
Debt Instrument, Face Amount			$ 100,000
Debt Instrument, Convertible, Conversion Percentage			4.00%
Debt Instrument, Unamortized Discount, Total			$ 100,000
Amortization of Debt Discount (Premium)						$ 25,002	$ 1,233

Note 4 - Debentures and Notes Payable - Schedule of Debt (Details) - USD ($)	Jun. 30, 2018	Dec. 31, 2017
Notes and debentures payable	$ 63,675	$ 110,788
Notes Payable, Related Parties	1,477,078	1,386,856
Less current portion	(1,477,078)	(1,262,434)
Long term debt		124,422
Five Point Two Five Percent Insurance Premium Finance Agreement, Due June 2018 [Member]
Notes and debentures payable		21,323
Nine Percent Promissory Note Due June 2018 [Member]
Notes and debentures payable		25,341
Four Point Seventy Five Percent Convertible Debenture Due June 2018 [Member]
Notes and debentures payable	63,675	64,124
Fourteen Percent Term Loan Due June 2018, One [Member]
Notes Payable, Related Parties	264,993	264,993
Fourteen Percent Term Loan Due June 2018, Two [Member]
Notes Payable, Related Parties	596,500	596,500
Fourteen Percent Term Loan Due June 2018, Three [Member]
Notes Payable, Related Parties	400,941	400,941
Seven Percent Convertible Promissory Note Due March 2019 [Member]
Notes Payable, Related Parties	163,407	98,187
Seven Percent Convertible Promissory Note Due June 2019 [Member]
Notes Payable, Related Parties	$ 51,237	$ 26,235

Note 5 - Commitments and Contingencies (Details Textual)		3 Months Ended		6 Months Ended
	Dec. 13, 2016 USD ($) g	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($)	Jun. 28, 2018 USD ($)	Jun. 30, 2017 USD ($)
Gain (Loss) on Extinguishment of Debt, Total		$ 139,789		$ 139,789
Supply Agreement Term	3 years
Product Scale up and Manufacturing Optimization Cost	$ 180,000
Product Scale up and Manufacturing Optimization Cost, First Installment	18,000
Product Scale up and Manufacturing Optimization Cost, Second Installment	$ 162,000
Operating Leases, Rent Expense, Total				$ 13,398		$ 19,500
Minimum [Member]
Shipment Product \| g	200
Maximum [Member]
Shipment Product \| g	400
North Dakota State University Research Foundation [Member]
Debt Instrument, Periodic Payment, Total					$ 139,789

Note 6 - Options Issued to Purchase Common Stock (Details Textual) - Chief Executive Officer [Member] - USD ($)			12 Months Ended
	Jun. 28, 2017	Mar. 21, 2017	Dec. 31, 2017
Stock Issued During Period, Value, Share-based Compensation, Gross		$ 50,000
Stock Issued During Period, Shares, Share-based Compensation, Gross	208,160
Share Price	$ 0.24
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate			0.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate			260.52%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate			1.84%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term			10 years

Note 2 - Going Concern and Management's Plans	6 Months Ended
Note 2 - Going Concern and Management's Plans	Jun. 30, 2018
Notes to Financial Statements
Substantial Doubt about Going Concern [Text Block]	Note 2 – Going Concern and Management’s Plans The Company has realized a cumulative net loss of $3,121,555 for the period from inception ( June 2, 2015) to June 30, 2018, has negative working capital of $2,395,226, and no revenues. The Company has insufficient revenue and capital commitments to fund the development of its planned products and to pay operating expenses. These conditions, among others, raise substantial doubt about the Company’s ability to continue as a going concern for a year following the issuance of these condensed consolidated financial statements. The ability of the Company to continue as a going concern depends on the successful completion of the Company's capital raising efforts to fund the development of its planned products. The Company intends to continue to raise additional capital through grants and debt and equity financings. There is no assurance that these funds will be sufficient to enable the Company to fully complete its development activities or attain profitable operations. If the Company is unable to obtain such additional financing on a timely basis or, notwithstanding any request the Company may make, the Company’s debt holders do not agree to convert their notes into equity or extend the maturity dates of their notes, the Company may have to curtail its development, marketing and promotional activities, which would have a material adverse effect on the Company’s business, financial condition and results of operations, and ultimately the Company could be forced to discontinue its operations and liquidate. The accompanying condensed consolidated financial statements have been prepared in conformity with U.S. GAAP, which contemplates the continuation of the Company as a going concern and the realization of assets and satisfaction of liabilities in the normal course of business. The carrying amounts of assets and liabilities presented in the condensed consolidated financial statements do not necessarily purport to represent realizable or settlement values. The condensed consolidated financial statements do not include any adjustments that might result from the outcome of this uncertainty.

Note 5 - Commitments and Contingencies	6 Months Ended
Note 5 - Commitments and Contingencies	Jun. 30, 2018
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	Note 5 – Commitments and Contingencies Litigation, Claims, and Assessments The Company may be involved in legal proceedings, claims and assessments arising in the ordinary course of business. In the opinion of management, such matters are currently not expected to have a material impact on the Company’s consolidated financial statements. The Company records legal costs associated with loss contingencies as incurred and accrues for all probable and estimable settlements. North Dakota State University Research Foundation License Agreement Under the terms of the Exclusive License Agreement (the “License Agreement”) signed on June 16, 2016 with North Dakota State University Research Foundation (“NDSU/RF”), the Company was delinquent on payments of $139,789 and unable to meet certain milestones. A dispute arose between the Company and NDSU/RF regarding compensation and deliverables. The License Agreement was renegotiated with NDSU/RF and on June 29, 2018, the Company entered into a settlement agreement and general release (the “Settlement Agreement”) with NDSU/RF to resolve the dispute, pursuant to which the Company and NDSU/RF fully and forever released each other from the License Agreement and mutually released each other of all claims. Accordingly, the Company recognized a gain of $139,789 for the settlement of accounts payable during the three months ended June 30, 2018. Supply Agreement On December 13, 2016, the Company entered into a Supply Agreement (the “Supply Agreement”) with Gelest Inc., a Pennsylvania corporation (“Gelest”). This Supply Agreement was for the purchase and sale of Cyclohexasilane (“CHS” or the “Products”) as set forth in the Supply Agreement, pursuant to which the Company agrees to use Gelest as a primary source to manufacture the Products for the duration of three years from the effective date. Under the terms of the Supply Agreement, Gelest would have scaled-up production of CHS, within their available capacity of 12 - 18 Kg per year, and further optimize the manufacturing process licensed by the purchaser from NDSU Research Foundation (“NDSU/RF”). The term of this project was 90 days from the receipt of the first installment of YSi6Cl14 salt from the purchaser. The cost for scale-up and manufacturing optimization was $180,000 to be paid by the purchaser in two installments. The initial installment of $18,000 was paid upon finalizing this Supply Agreement. The second installment of $162,000 was to be paid net 30 days from availability for shipment of between 200 – 400 grams of the initial product of the quality stated in the Supply Agreement. On April 6, 2018, Gelest and the Company mutually agreed to cancel the December 13, 2016 CHS Supply Agreement. The Company is currently negotiating an agreement with Gelest where Gelest will provide CHS storage and handling, website and catalog listings of CHS produced by or for the Company for sale to its customers, and customer service, including trans-fill of customer cylinders. Office Lease The Company entered into a lease agreement in June 2015 for office space in North Dakota that was canceled on April 30, 2017 with no cancellation costs paid or due. The Company has an amended office lease in Tulsa, Oklahoma that expired on July 31, 2018. Rent expense for operating leases was $13,398 and $19,500 for the six -month periods ended June 30, 2018 and 2017, respectively. The Company is now on a month to month basis under the terms of the lease.

Note 6 - Options Issued to Purchase Common Stock	6 Months Ended
Note 6 - Options Issued to Purchase Common Stock	Jun. 30, 2018
Notes to Financial Statements
Stockholders' Equity Note Disclosure [Text Block]	Note 6 – Options Issued to Purchase Common Stock On March 21, 2017, the Company and Mr. Michael Kraft entered into a consulting agreement, pursuant to which the Company granted Mr. Kraft an option to purchase from the Company $50,000 of common stock at the market price on the date of the execution of the Reverse Split, which became effective on June 28, 2017. Accordingly, the $50,000 value of options calculates to 208,160 shares based upon the $0.24 closing price on June 28, 2017. The $50,000 estimated fair value of the option to purchase common stock issued in 2017 was determined using the Black-Scholes option pricing model. The expected dividend yield of $0 is based on the average annual dividend yield at the date issued. Expected volatility of 260.52% is based on the historical volatility of the stock. The risk-free interest rate of 1.84% is based on the U.S. Treasury Constant Maturity rates as of the issue date. The expected life of the option of ten years is based on historical exercise behavior and expected future experience.

Note 7 - Subsequent Events	6 Months Ended
Note 7 - Subsequent Events	Jun. 30, 2018
Notes to Financial Statements
Subsequent Events [Text Block]	Note 7 – Subsequent Events Subsequent to June 30, 2018, the Company issued 125,993 shares of common stock in payment of $7,662 of consulting services. Subsequent to June 30, 2018, CJND, a company owned by Mr. Simon Calton, Co-Chairman of the Board of Directors, advanced an additional $40,000 under the terms of the 14% term loan.

Note 1 - Business Organization, Nature of Business and Basis of Presentation (Details Textual)	Jun. 28, 2017	Feb. 21, 2017	Sep. 30, 2016 shares
Reverse Stock Split [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio	300
Reverse Stock Split [Member] \| Minimum [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio		50
Reverse Stock Split [Member] \| Maximum [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio		300
Series B Convertible Preferred Stock [Member]
Stock Issued During Period, Shares, Conversion of Convertible Securities			4,760,872
Sale of Stock, Percentage of Ownership after Transaction			65.00%

Note 3 - Summary of Significant Accounting Policies - Antidilutive Securities Excluded From Computation of Earnings Per Share (Details) - shares	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Total potentially dilutive shares (in shares)	110,185,182	103,428,981
Options [Member]
Total potentially dilutive shares (in shares)	2,883,379	284,166
Warrant [Member]
Total potentially dilutive shares (in shares)	1,061	65,228
Series A Convertible Preferred Stock [Member]
Total potentially dilutive shares (in shares)	115,000	115,000
Series B Convertible Preferred Stock [Member]
Total potentially dilutive shares (in shares)		41,842,241
Convertible Debt Securities [Member]
Total potentially dilutive shares (in shares)	107,185,742	61,122,346

Note 7 - Subsequent Events (Details Textual) - USD ($)	1 Months Ended	6 Months Ended
Note 7 - Subsequent Events (Details Textual) - USD ($)	Aug. 13, 2018	Jun. 30, 2018	Jun. 30, 2017	Apr. 26, 2016
Stock Issued During Period, Value, Issued for Services		$ 71,879
Proceeds from Related Party Debt			$ 486,750
Debt Instrument, Interest Rate, Stated Percentage				4.75%
Subsequent Event [Member]
Stock Issued During Period, Shares, Issued for Services	125,993
Stock Issued During Period, Value, Issued for Services	$ 7,662
Subsequent Event [Member] \| Carlton James North Dakota Limited [Member] \| 14% Term Loan Due June 2019 [Member]
Proceeds from Related Party Debt	$ 40,000
Debt Instrument, Interest Rate, Stated Percentage	14.00%