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Note 9 - Related Party Transactions (Details Textual) - USD ($)					3 Months Ended	12 Months Ended
	Jan. 06, 2021	Nov. 01, 2020	Apr. 01, 2020	Jan. 06, 2020	Mar. 31, 2021	Dec. 31, 2020
Shares Issued, Price Per Share (in dollars per share)		$ 1.5779	$ 1.08
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture, Total					$ 120,535
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)			1,444,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)			10 years
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)			103,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)			3 years
Angry Pug Sportswear [Member]
Related Party Transaction, Purchases from Related Party					$ 0	$ 9,886
Louis Hoch [Member]
Ownership Percentage					50.00%
Chief Financial Officer [Member]
Treasury Stock, Shares, Acquired (in shares)	11,860			11,860
Treasury Stock Acquired, Average Cost Per Share (in dollars per share)	$ 3.25			$ 1.74
Chief Financial Officer [Member] | Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)			200,000
President and Chief Executive Officer [Member] | Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)			300,000
Director One [Member] | Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)			10,000
Director Two [Member] | Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)			30,000
Chief Executive Officer [Member]
Treasury Stock, Shares, Acquired (in shares)		54,756
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture, Total (in shares)		136,891
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture, Total		$ 216,000

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