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Nature of Business and Basis of Presentation - Consolidated Statements of Operations Comprehensive Income (Loss) and Balance Sheet (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
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Oct. 31, 2013
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Oct. 31, 2012
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Oct. 31, 2013
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Oct. 31, 2012
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Jan. 31, 2013
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| Condensed Consolidating Financial Information [Line Items] | |||||
| Stock-based compensation expense | $ 1,432 | $ 2,425 | $ 4,464 | ||
| Loss from operations | 529 | (1,605) | (752) | (10,285) | |
| Net income (loss) | 577 | (126) | (1,623) | (25,701) | |
| Comprehensive income (loss) | 1,794 | 1,317 | (1,103) | (19,099) | |
| Basic and diluted net income (loss) per share | $ 0.00 | $ (0.79) | |||
| Additional paid-in capital | 221,379 | 221,379 | 216,359 | ||
| Accumulated loss | (14,281) | (14,281) | (12,658) | ||
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As Previously Reported [Member]
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| Condensed Consolidating Financial Information [Line Items] | |||||
| Stock-based compensation expense | 728 | 3,056 | |||
| Loss from operations | (901) | (8,877) | |||
| Net income (loss) | 578 | (24,293) | |||
| Comprehensive income (loss) | 2,021 | (17,691) | |||
| Basic and diluted net income (loss) per share | $ 0.02 | $ (0.75) | |||
| Additional paid-in capital | 214,531 | ||||
| Accumulated loss | (10,830) | ||||
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Adjustment [Member]
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| Condensed Consolidating Financial Information [Line Items] | |||||
| Stock-based compensation expense | 704 | 1,408 | |||
| Loss from operations | (704) | (1,408) | |||
| Net income (loss) | (704) | (1,408) | |||
| Comprehensive income (loss) | (704) | (1,408) | |||
| Basic and diluted net income (loss) per share | $ (0.02) | $ (0.04) | |||
| Additional paid-in capital | 1,828 | ||||
| Accumulated loss | $ (1,828) | ||||