Note 15 - Stockholders' Equity (Details Textual) - USD ($)					1 Months Ended					3 Months Ended
	Aug. 31, 2022	Mar. 25, 2022	Feb. 25, 2022	Jul. 01, 2021	Nov. 30, 2023	Nov. 30, 2022	Aug. 31, 2022	May 31, 2022	Feb. 28, 2022	Mar. 31, 2022	Dec. 31, 2021	Nov. 30, 2021
Stock Issued During Period, Shares, Warrants and Stock Options Exercised (in shares)										76,754
Common Stock, Dividends, Per Share, Declared (in dollars per share)										$ 0.025
Dividends, Total			$ 2,400,000						$ 214,000
Dividends Payable										$ 53,000		$ 53,000
Common Stock, Shares, Outstanding, Ending Balance (in shares)										103,810,939	96,774,185
Class of Warrant or Right, Outstanding (in shares)										9,422,741	9,500,166
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)										$ 11.50	$ 11.50
Common Stock, Capital Shares Reserved for Future Issuance (in shares)										21,694,763
Contingent Value Right [Member]
Class of Warrant or Right, Outstanding (in shares)										10,209,300	10,209,300
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)										2.125	2.125
Forecast [Member]
Dividends, Total	$ 31,000				$ 2,000	$ 2,000	$ 31,000	$ 214,000
Quarterly Dividend [Member]
Common Stock, Dividends, Per Share, Declared (in dollars per share)				$ 0.025
Flat Top Operating Area [Member]
Stock Issued During Period, Shares, Acquisitions (in shares)		6,960,000	6,960,000