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Note 12 - Capital Stock (Details Textual)		1 Months Ended	12 Months Ended
	Apr. 06, 2021 USD ($) $ / shares shares	Dec. 31, 2022 USD ($) $ / shares shares	Dec. 31, 2022 USD ($) $ / shares shares	Dec. 31, 2021 USD ($) $ / shares shares	Dec. 08, 2022 USD ($)	Apr. 25, 2022 $ / shares shares	Dec. 31, 2020 shares
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares						$ 0.001
Proceeds from Issuance of Common Stock | $			$ 205,389	$ 62,850,213
Payments of Stock Issuance Costs | $			242,866	3,663,291
Offering of Debt Securities and Warrants, Maximum (in shares)						500,000,000
Maximum Shares of Common Stock Registered by Certain Selling Shareholders (in shares)						8,297,093
Stock Issued During Period, Value, New Issues | $			$ 205,389	$ 62,850,213
Class of Warrant or Right, Outstanding (in shares)		105,556	105,556	105,556			105,556
Warrants for Common Class B Stock [Member]
Class of Warrant or Right, Outstanding (in shares)		104,772	104,772
Warrants for Common Class A Stock [Member]
Class of Warrant or Right, Outstanding (in shares)		784	784
Common Class A [Member]
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares		$ 0.001	$ 0.001	$ 0.001
Common Class B [Member]
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares		$ 0.001	$ 0.001	$ 0.001
Common Stock, Voting Rights Per Share		10	10
Public Offering Including Over-allotment Option [Member] | Common Class A [Member]
Stock Issued During Period, Shares, New Issues (in shares)	2,645,000
Public Offering [Member] | Common Class A [Member]
Stock Issued During Period, Shares, New Issues (in shares)	2,345,000
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares	$ 0.001
Shares Issued, Price Per Share (in dollars per share) | $ / shares	$ 25.00
Proceeds from Issuance of Common Stock | $	$ 58,625,000
Stock Sale Agreement, Percent of Gross Proceeds	5.50%
Proceeds from Issuance of Common Stock, Net | $	$ 55,400,625
Payments of Stock Issuance Costs | $	$ 133,169
Over-Allotment Option [Member] | Common Class A [Member]
Stock Issued During Period, Shares, New Issues (in shares)	345,000
Sold by Selling Stockholder [Member] | Common Class A [Member]
Stock Issued During Period, Shares, New Issues (in shares)	300,000
At The Market Offering [Member] | Common Class A [Member]
Stock Issued During Period, Shares, New Issues (in shares)		7,887
Stock Issued During Period, Value, New Issues | $		$ 205,389
Commission, Percent of Gross Sales Price Per Share		3.00%
At The Market Offering [Member] | Common Class A [Member] | Maximum [Member]
Equity Offering Program, Aggregate Share Price | $		$ 100,000,000	$ 100,000,000		$ 100,000,000

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