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Stock-Based Compensation (Restricted Stock Units) (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Jan. 31, 2023
Jan. 31, 2022
Summary of restricted stock and stock unit awards    
Compensation expense $ 612 $ 1,013
Unrecognized compensation at cost $ 549  
Restricted stock units    
Summary of restricted stock and stock unit awards    
Granted 0 68,870
Compensation expense $ 612 $ 1,013
Restricted Stock Units    
Outstanding at beginning of year 420,870 611,495
Granted 0 68,870
Vested (233,670) (259,495)
Forfeited 0 0
Outstanding at end of year 187,200 420,870
Weighted- average fair value of restricted stock units    
Outstanding at beginning of year $ 4.37 $ 4.26
Granted 0 3.63
Vested 3.82 3.55
Forfeited 0 0
Outstanding at end of year $ 4.40 $ 4.37
2011 Plan [Member] | Restricted stock units    
Restricted Stock Units    
Vested (119,200)  
Forfeited 0