Nature of Business and Basis of Presentation - Reclassification Reflected in Current Statements of Operations and Comprehensive Income (Loss) (Detail) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 9 Months Ended |
---|---|---|
Oct. 31, 2012
|
Oct. 31, 2012
|
|
Basis of Presentation [Line Items] | ||
Prior period reclassification adjustment | ||
Cost of Revenue - Product [Member]
|
||
Basis of Presentation [Line Items] | ||
Prior period reclassification adjustment | (50) | (162) |
Cost of Revenue - Service [Member]
|
||
Basis of Presentation [Line Items] | ||
Prior period reclassification adjustment | (250) | (737) |
Research and Development Expenses [Member]
|
||
Basis of Presentation [Line Items] | ||
Prior period reclassification adjustment | (221) | (593) |
Selling and Marketing Expenses [Member]
|
||
Basis of Presentation [Line Items] | ||
Prior period reclassification adjustment | (46) | (127) |
General and Administrative Expenses [Member]
|
||
Basis of Presentation [Line Items] | ||
Prior period reclassification adjustment | $ 567 | $ 1,619 |