Stockholders' Equity - Effect of Recording Stock-Based Compensation (Detail) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Jan. 31, 2018 |
Jan. 31, 2017 |
Jan. 31, 2016 |
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| Stock-based compensation expense by type of award: | |||
| Stock options | $ 1,025 | $ 873 | $ 1,257 |
| Restricted stock units | 664 | 624 | 1,203 |
| Deferred stock units | 487 | 709 | 607 |
| Performance-based restricted stock units | 511 | 398 | 475 |
| Employee stock purchase plan | 9 | 17 | 10 |
| Total stock-based compensation | $ 2,696 | $ 2,621 | $ 3,552 |
| X | ||||||||||
- Definition Deferred Stock Expense No definition available.
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- Definition Employee stock purchase plan expense. No definition available.
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- Definition The noncash expense that represents the cost of performance based stock or units distributed to employees as compensation. No definition available.
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| X | ||||||||||
- Definition The noncash expense that represents the cost of restricted stock or unit distributed to employees as compensation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The noncash expense that accounts for the value of stock or unit options distributed to employees as compensation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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