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Note 15 - Equity and Stock-based Compensation (Details Textual)
 3 Months Ended 6 Months Ended
Sep. 04, 2024
shares
Oct. 12, 2023
Sep. 28, 2023
shares
Jul. 31, 2024
USD ($)
$ / shares
shares
Jul. 31, 2023
USD ($)
Jul. 31, 2024
USD ($)
$ / shares
shares
Jul. 31, 2023
USD ($)
Jan. 31, 2024
shares
Sep. 27, 2023
shares
Preferred Stock, Shares Outstanding (in shares)       1,683,000   1,683,000   1,683,000  
Preferred Stock, Liquidation Preference, Value | $       $ 49,600,000   $ 49,600,000      
Preferred Stock, Amount of Preferred Dividends in Arrears | $           $ 7,600,000      
Preferred Stock, Liquidation Preference Per Share (in dollars per share) | $ / shares       $ 25   $ 25      
Common Stock, Shares, Issued (in shares)     1,405,779 1,406,000   1,406,000   1,406,000 13,788,738
Common Stock, Shares, Outstanding (in shares)     1,405,779 1,406,000   1,406,000   1,406,000 13,788,738
Share-Based Payment Arrangement, Expense | $       $ 46,000 $ 108,000 $ 95,000 $ 158,000    
Reverse Stock Split [Member]                  
Stockholders' Equity Note, Stock Split, Conversion Ratio   10 10            
Subsequent Event [Member]                  
Preferred Stock, Shares Outstanding (in shares) 0                
Common Stock, Shares, Outstanding (in shares) 8,000,000                
Subsequent Event [Member] | Conversion of Series A Preferred Stock Into Common Stock [Member]                  
Conversion of Stock, Shares Issued (in shares) 6,600,000                
O 2025 Q2 Dividends [Member]                  
Preferred Dividends Payable, Amount Per Share (in dollars per share) | $ / shares       $ 0.5625   $ 0.5625