Note 17 - Convertible Redeemable Preferred Stock (Details Textual)			1 Months Ended			2 Months Ended	3 Months Ended		6 Months Ended	12 Months Ended			13 Months Ended	18 Months Ended
	Jun. 05, 2020 USD ($)	Jan. 03, 2020 USD ($) $ / shares shares	Jun. 30, 2021 USD ($) $ / shares shares	Jan. 31, 2021 USD ($) $ / shares shares	Nov. 30, 2020 USD ($) $ / shares shares	Feb. 28, 2021 shares	Dec. 31, 2021 USD ($) $ / shares shares	Mar. 31, 2021 USD ($)	Jun. 30, 2020 shares	Dec. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares	Dec. 31, 2021 USD ($) $ / shares shares	Jun. 30, 2021 USD ($) $ / shares shares	Sep. 30, 2021 USD ($)
Proceeds from Issuance of Preferred Stock and Preference Stock										$ 3,000,000	$ 5,426,601
Temporary Equity, Carrying Amount, Including Portion Attributable to Noncontrolling Interests, Ending Balance							$ 0			0	1,532,164	$ 1,532,164	$ 0
Adjustments to Additional Paid in Capital, Preferred Stock with Beneficial Conversion Feature										1,500,000
Proceeds from Issuance of Convertible Preferred Stock										0	1,500,000
Advance from Investor, Current							$ 0			$ 0	$ 1,500,000	$ 1,500,000	$ 0		$ 1,500,000
Class of Warrant Or Right, Issued In Period (in shares) | shares										128,572
Class of Warrant Or Right, Issued In Period, Exercise Price (in dollars per share) | $ / shares							$ 1.75			$ 1.75			$ 1.75
Class of Warrant or Right, Outstanding (in shares) | shares							128,572			128,572	195,160	195,160	128,572
Stock Issued During Period, Shares, Warrants Exercised (in shares) | shares											391,308
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares							$ 1.75			$ 1.75	$ 1.00	$ 1.00	$ 1.75
Dividends, Total										$ 0	$ 0
Measurement Input, Price Volatility [Member] | Minimum [Member]
Warrants and Rights Outstanding, Measurement Input											68	68
Measurement Input, Price Volatility [Member] | Maximum [Member]
Warrants and Rights Outstanding, Measurement Input											167	167
Measurement Input, Risk Free Interest Rate [Member]
Warrants and Rights Outstanding, Measurement Input							0.30			0.30	0.30	0.30	0.30
Measurement Input, Risk Free Interest Rate [Member] | Minimum [Member]
Warrants and Rights Outstanding, Measurement Input											42	42
Measurement Input, Risk Free Interest Rate [Member] | Maximum [Member]
Warrants and Rights Outstanding, Measurement Input											1.65	1.65
Measurement Input, Expected Term [Member]
Warrants and Rights Outstanding, Measurement Input											5	5
Measurement Input, Expected Dividend Rate [Member]
Warrants and Rights Outstanding, Measurement Input											0	0
Warrants In Connection With Series D Preferred Stock [Member]
Class of Warrant Or Right, Issued In Period (in shares) | shares							128,572
Class of Warrant Or Right, Issued In Period, Exercise Price (in dollars per share) | $ / shares							$ 1.75			$ 1.75			$ 1.75
Percentage of Variable Price on VWAP							85.00%			85.00%			85.00%
Class of Warrant or Right, Outstanding (in shares) | shares							230,000			230,000			230,000
Stock Issued During Period, Shares, Warrants Exercised (in shares) | shares			128,572
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares			$ 1.75											$ 1.75
Series A Preferred Stock Warrants [Member]
Class of Warrant Or Right, Issued In Period (in shares) | shares											792,660
Class of Warrant Or Right, Issued In Period, Exercise Price (in dollars per share) | $ / shares											$ 1	$ 1
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares											792,660	792,660
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares											$ 1	$ 1
Cashless Exchange Warrant [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares						103,104					391,308	391,308
Stock Issued During Period, Shares, Warrants Exercised (in shares) | shares						195,160					597,500
Conversion of Accounts Receivable Owed to Investor to Preferred Stock [Member]
Debt Conversion, Converted Instrument, Amount														$ 478,000
Equity Financing Arrangement [Member]
Proceeds from Issuance or Sale of Equity, Total											$ 5,000,000
Series A Preferred Stock [Member]
Stock Issued During Period, Shares, New Issues (in shares) | shares											42,660
Convertible Preferred Stock, Shares Issued upon Conversion (in shares) | shares											10	10
Stock Issued During Period, Value, New Issues											$ 426,600
Preferred Stock Redemption Premium	$ 2,500,000											$ 2,500,000
Preferred Stock, Dividend Rate, Percentage											8.00%	8.00%
Preferred Stock, Dividend Rate, Per-Dollar-Amount (in dollars per share) | $ / shares											$ 10	$ 10
Dividends Payable, Current							$ 100,000			$ 100,000	$ 100,000	$ 100,000	$ 100,000
Dividends Payable							400,000			400,000	380,000	380,000	400,000
Preferred Stock, Value, Issued, Ending Balance							3,154,583			3,154,583	2,754,583	2,754,583	3,154,583
Series A Preferred Stock [Member] | Conversion of Accounts Receivable Owed to Investor to Preferred Stock [Member]
Debt Conversion, Converted Instrument, Shares Issued (in shares) | shares														48,200
Series A Preferred Stock [Member] | LF International Offering [Member]
Stock Issued During Period, Shares, New Issues (in shares) | shares		500,000
Convertible Preferred Stock, Shares Issued upon Conversion (in shares) | shares		10
Shares Issued, Price Per Share (in dollars per share) | $ / shares		$ 10.00
Proceeds from Issuance or Sale of Equity, Total		$ 5,000,000
Series A Preferred Stock [Member] | Additional Shares Offering [Member]
Stock Issued During Period, Shares, New Issues (in shares) | shares		200,000
Shares Issued, Price Per Share (in dollars per share) | $ / shares		$ 10.00
Series A Preferred Stock [Member] | Equity Financing Arrangement [Member]
Stock Issued During Period, Value, New Issues														$ 1,000,000
Common Stock [Member] | LF International Offering [Member]
Stock Issued During Period, Shares, New Issues (in shares) | shares									400,000
Series B Preferred Stock [Member]
Stock Issued During Period, Shares, New Issues (in shares) | shares					170,000
Stock Issued During Period, Value, New Issues										1,612,707
Preferred Stock, Dividend Rate, Percentage					8.00%
Dividends Payable							150,000			150,000			150,000
Proceeds from Issuance of Preferred Stock and Preference Stock					$ 1,500,000
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares					$ 10.00
Preferred Stock, Convertible, Conversion Price (in dollars per share) | $ / shares					$ 1.00
Temporary Equity, Carrying Amount, Including Portion Attributable to Noncontrolling Interests, Ending Balance					$ 1,500,000
Preferred Stock, Value, Issued, Ending Balance					$ 1,500,000		1,714,707			1,714,707	0	0	1,714,707
Preferred Stock, Accretion of Redemption Discount										46,707			64,707
Series C Preferred Stock [Member]
Stock Issued During Period, Shares, New Issues (in shares) | shares				170,000
Stock Issued During Period, Value, New Issues										1,500,000
Preferred Stock, Dividend Rate, Percentage				8.00%
Proceeds from Issuance of Preferred Stock and Preference Stock				$ 1,500,000
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares				$ 10.00
Preferred Stock, Convertible, Conversion Price (in dollars per share) | $ / shares				$ 1.00
Preferred Stock, Value, Issued, Ending Balance							$ 1,630,333			1,630,333	0	0	$ 1,630,333
Adjustments to Additional Paid in Capital, Preferred Stock with Beneficial Conversion Feature				$ 1,500,000				$ 1,500,000
Series D Preferred Stock [Member]
Stock Issued During Period, Value, New Issues										$ 1,500,000
Preferred Stock, Dividend Rate, Percentage							8.00%
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares							$ 10			$ 10			$ 10
Preferred Stock, Convertible, Conversion Price (in dollars per share) | $ / shares							$ 1.00			$ 1.00			$ 1.00
Preferred Stock, Value, Issued, Ending Balance							$ 1,511,711			$ 1,511,711	$ 0	$ 0	$ 1,511,711
Adjustments to Additional Paid in Capital, Preferred Stock with Beneficial Conversion Feature							300,000
Preferred Stock, Convertible, Beneficial Conversion Feature							$ 0.3
Series D Preferred Stock [Member] | Unrelated Third Party [Member]
Proceeds from Issuance of Convertible Preferred Stock			$ 1,500,000