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Stock-Based Compensation - Additional Information (Details) - USD ($) |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Apr. 04, 2013 | Jul. 31, 2021 | Jul. 31, 2020 | Jul. 31, 2021 | Jul. 31, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Stock options granted |  | 0 | 0 | 201,875 | 0
Compensation expense |  | $ 400,000 | $ 27,000 | $ 700,000 | $ 100,000
Unrecognized compensation cost related to unvested stock options |  | 3,300,000 |  | $ 3,300,000 |
Weighted-average period |  |  |  | 2 years 4 months 24 days |
Cash received for stock option exercises |  |  |  | $ 600,000 | 0
Fair value of stock options exercised |  |  |  | 300,000 |
Intrinsic value of stock options exercised |  |  |  | 100,000 |
Stock options exercised |  |  |  |  | 0
Stock Award Units |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Compensation expense |  | 900,000 | 1,500,000 | $ 2,100,000 | 3,000,000.0
Weighted-average period |  |  |  | 2 years |
Unrecognized compensation cost |  | $ 4,500,000 |  | $ 4,500,000 |
Fair value of stock award units vested |  |  |  | $ 7,200,000 |
Stock Award Units | Corporate Initiatives |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Compensation expense |  |  | $ 400,000 |  | $ 400,000
Performance-Based Stock Awards | Minimum |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Number of shares issued percentage of target number of underlying stock award units |  |  |  | 0.00% |
Performance-Based Stock Awards | Maximum |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Number of shares issued percentage of target number of underlying stock award units |  |  |  | 150.00% |
Employee Stock Option Plan |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Number of common stock shares | 11,000,000 |  |  |  |
Options granted to participants exercisable period | 3 years |  |  |  |

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