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Equity and Stock-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jul. 31, 2021 | Jul. 31, 2020 | Jul. 31, 2021 | Jul. 31, 2020 | Jan. 31, 2021
Equity [Abstract] |  |  |  |  |
Quarterly dividends declared (in usd per share) | $ 0.5625 |  |  |  |
Preferred stock, shares outstanding (in shares) | 1,223,000 |  | 1,223,000 |  | 1,038,000
Preferred stock, liquidation preference | $ 30,600 |  | $ 30,600 |  |
Compensation expense related to stock-based awards granted | $ 115 | $ 219 | $ 224 | $ 449 |

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