Annual report pursuant to Section 13 and 15(d)

Quarterly Results of Operations-Unaudited - Quarterly Results of Operations (Detail)

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Quarterly Results of Operations-Unaudited - Quarterly Results of Operations (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 12 Months Ended 36 Months Ended
Jan. 31, 2014
Oct. 31, 2013
Jul. 31, 2013
Apr. 30, 2013
Jan. 31, 2013
Jul. 31, 2012
Apr. 30, 2012
Jan. 31, 2014
Jan. 31, 2013
Jan. 31, 2012
Oct. 31, 2012
Quarterly Financial Information Disclosure [Abstract]                      
Revenue $ 35,616 $ 37,771 $ 37,380 $ 35,552 $ 44,575 $ 36,738 $ 36,626       $ 39,249
Gross profit 17,865 20,888 21,362 19,084 26,066 16,860 20,505 79,199 83,291 93,285 19,860
Operating expenses 18,742 20,359 20,827 20,900 21,127 24,369 21,676 80,828 88,637 94,955 21,465
Net (loss) income from continuing operations (1,348) 798 343 (2,020) 5,923 (8,098) (287)       (337)
Net (loss) income from discontinued operations (59) (221) (558) 35 613 2,100 (19,290) (803) (16,366) (611) 211
Net (loss) income $ (1,407) $ 577 $ (215) $ (1,985) $ 6,536 $ (5,998) $ (19,577) $ (3,030) $ (19,165) $ (4,014) $ (126)
Net (loss) income per share from continuing operations:                      
Basic (loss) income per share $ (0.04) $ 0.02 $ 0.01 $ (0.06) $ 0.18 $ (0.25) $ (0.01) $ (0.07) $ (0.09) $ (0.11) $ (0.01)
Diluted (loss) income per share $ (0.04) $ 0.02 $ 0.01 $ (0.06) $ 0.18 $ (0.25) $ (0.01) $ (0.07) $ (0.09) $ (0.11) $ (0.01)
(Loss) income per share from discontinued operations:                      
Basic (loss) income per share $ 0.00 $ 0.00 $ (0.02) $ 0.00 $ 0.02 $ 0.07 $ (0.59) $ (0.02) $ (0.50) $ (0.02) $ 0.01
Diluted (loss) income per share $ 0.00 $ 0.00 $ (0.02) $ 0.00 $ 0.02 $ 0.07 $ (0.59) $ (0.02) $ (0.50) $ (0.02) $ 0.01
(Loss) income per share                      
Basic (loss) income per share $ (0.04) $ 0.02 $ (0.01) $ (0.06) $ 0.20 $ (0.18) $ (0.60) $ (0.09) $ (0.59) $ (0.13) $ 0.00
Diluted (loss) income per share $ (0.04) $ 0.02 $ (0.01) $ (0.06) $ 0.20 $ (0.18) $ (0.60) $ (0.09) $ (0.59) $ (0.13) $ 0.00