Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - Effect of Recording Stock Based Compensation (Detail)

v2.4.0.8
Stockholders' Equity - Effect of Recording Stock Based Compensation (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Jan. 31, 2014
Jan. 31, 2013
Jan. 31, 2012
Stock-based compensation expense by type of award:      
Stock options $ 453 $ 3,586 $ 120
Restricted stock units 1,907 2,218 1,265
Performance-based restricted stock units 599 125 1,603
Total stock-based compensation $ 2,959 $ 5,929 $ 2,988