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Note 14 - Equity and Stock-based Compensation (Details Textual) - USD ($)
3 Months Ended 9 Months Ended
Oct. 31, 2021
Oct. 31, 2020
Oct. 31, 2021
Oct. 31, 2020
Jan. 31, 2021
Preferred Stock, Dividends Per Share, Declared (in dollars per share) $ 0.5625        
Preferred Stock, Shares Outstanding, Ending Balance (in shares) 1,250,000   1,250,000   1,038,000
Preferred Stock, Liquidation Preference, Value $ 31,200,000   $ 31,200,000    
Share-based Payment Arrangement, Expense $ 183,000 $ 219,000 $ 419,000 $ 449,000