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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 | 6 Months Ended | |||
|---|---|---|---|---|---|
|
Jul. 31, 2013
|
Jul. 31, 2012
|
Jul. 31, 2013
|
Jul. 31, 2012
|
Jan. 31, 2013
|
|
| Stock-based compensation expense | $ 657 | $ 2,004 | $ 1,770 | $ 3,032 | |
| Loss from operations | 535 | (7,509) | (1,281) | (8,680) | |
| Net loss | (215) | (5,998) | (2,200) | (25,575) | |
| Comprehensive loss | 125 | (2,461) | (2,897) | (20,416) | |
| Basic and diluted net loss per share | $ (0.18) | $ (0.78) | |||
| Additional paid-in capital | 218,628 | 218,628 | 216,359 | ||
| Accumulated loss | (14,858) | (14,858) | (12,658) | ||
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As Previously Reported [Member]
|
|||||
| Stock-based compensation expense | 1,300 | 2,328 | |||
| Loss from operations | (6,805) | (7,976) | |||
| Net loss | (5,294) | (24,871) | |||
| Comprehensive loss | (1,757) | (19,712) | |||
| Basic and diluted net loss per share | $ (0.16) | $ (0.76) | |||
| Additional paid-in capital | 214,531 | ||||
| Accumulated loss | (10,830) | ||||
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Adjustment [Member]
|
|||||
| Stock-based compensation expense | 704 | 704 | |||
| Loss from operations | (704) | (704) | |||
| Net loss | (704) | (704) | |||
| Comprehensive loss | (704) | (704) | |||
| Basic and diluted net loss per share | $ (0.02) | $ (0.02) | |||
| Additional paid-in capital | 1,828 | ||||
| Accumulated loss | $ (1,828) | ||||