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Stock-Based Compensation - Stock Option Activity Under Stock Option Plan (Details)
$ / shares in Units, $ in Thousands
3 Months Ended
Apr. 30, 2022
USD ($)
$ / shares
shares
Stock Options  
Beginning balance (in shares) | shares 1,570,211
Granted (in shares) | shares 502,500
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price $ 4.13
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period | shares (4,750)
Forfeited (in shares) | shares (2,000)
Expired (in shares) | shares 0
Ending balance (in shares) | shares 2,065,961
Exercisable ending balance (in shares) | shares 815,761
Grant Date Weighted Average Exercise Price  
Beginning balance (in dollars per share) $ 9.02
Granted (in dollars per share) 9.45
Forfeited (in dollars per share) 9.45
Expired (in dollars per share) 0
Ending balance (in dollars per share) 9.14
Exercisable ending balance (in dollars per share) $ 9.84
Weighted Average Remaining Contractual Life (in Years)  
Outstanding at end of period 7 years 10 months 24 days
Exercisable ending balance 6 years
Aggregate Intrinsic Value  
Outstanding at end of period | $ $ 2,231
Exercisable ending balance | $ $ 853
Class A common stock  
Aggregate Intrinsic Value  
Market value per share (in dollars per share) $ 8.82