Note 14 - Equity and Stock-based Compensation (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2023	Jul. 31, 2022	Jan. 31, 2023
Preferred Stock, Shares Outstanding, Ending Balance (in shares)	1,683,000		1,683,000		1,683,000
Preferred Stock, Liquidation Preference, Value	$ 46,800,000		$ 46,800,000
Preferred Stock, Amount of Preferred Dividends in Arrears			$ 4,700,000
Preferred Stock, Liquidation Preference Per Share (in dollars per share)	$ 25.00		$ 25.00
Share-Based Payment Arrangement, Expense	$ 108,000	$ 152,000	$ 158,000	$ 388,000
Preferred Stock [Member] | Quarterly Dividends [Member]
Dividends Payable, Amount Per Share (in dollars per share)	$ 0.5625		$ 0.5625