Annual report pursuant to Section 13 and 15(d)

Quarterly Results of Operations-Unaudited (Details)

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Quarterly Results of Operations-Unaudited (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 12 Months Ended
Jan. 31, 2013
Oct. 31, 2012
Jul. 31, 2012
Apr. 30, 2012
Jan. 31, 2012
Oct. 31, 2011
Jul. 31, 2011
Apr. 30, 2011
Jan. 31, 2013
Jan. 31, 2012
Jan. 31, 2011
Revenue $ 44,575 $ 39,249 $ 36,738 $ 36,626 $ 43,324 $ 42,913 $ 38,386 $ 40,169      
Gross profit 25,776 19,503 16,490 20,153 23,540 24,308 22,111 22,038 81,922 91,997 95,592
Operating expenses 20,417 20,404 23,295 21,324 25,954 23,570 21,334 22,809 85,440 93,667 93,606
Net (loss) income from continuing operations 6,343 367 (7,394) (287) (5,073) 1,108 966 (404) 0    
Net (loss) income from discontinued operations (1) 613 [1] 211 [1] 2,100 [1] (19,290) [1] 248 [1] (700) [1] (179) [1] 20 [1] (16,366) (611) (1,103)
Net (loss) income $ 6,956 $ 578 $ (5,294) $ (19,577) $ (4,825) $ 408 $ 787 $ (384) $ (17,337) $ (4,014) $ 29,468
Net income (loss) per share from continuing operations (2):                      
Basic (loss) income per share (in dollars per share) $ 0.2 [2] $ 0.01 [2] $ (0.22) [2] $ (0.01) [2] $ (0.16) [2] $ 0.03 [2] $ 0.03 [2] $ (0.01) [2] $ (0.03) $ (0.11) $ 0.98
Diluted (loss) income per share (in dollars per share) $ 0.19 [2] $ 0.01 [2] $ (0.22) [2] $ (0.01) [2] $ (0.16) [2] $ 0.03 [2] $ 0.03 [2] $ (0.01) [2] $ (0.03) $ (0.11) $ 0.96
Loss per share from discontinued operations (2):                      
Basic loss per share (in dollars per share) $ 0.02 [2] $ 0.01 [2] $ 0.06 [2] $ (0.59) [2] $ 0.01 [2] $ (0.02) [2] $ (0.01) [2] $ 0.00 [2] $ (0.50) $ (0.02) $ (0.04)
Diluted loss per share (in dollars per share) $ 0.02 [2] $ 0.01 [2] $ 0.06 [2] $ (0.59) [2] $ 0.01 [2] $ (0.02) [2] $ (0.01) [2] $ 0.00 [2] $ (0.50) $ (0.02) $ (0.04)
Earnings per share (2):                      
Basic income (loss) per share (in dollars per share) $ 0.22 [2] $ 0.02 [2] $ (0.16) [2] $ (0.60) [2] $ (0.15) [2] $ 0.01 [2] $ 0.02 [2] $ (0.01) [2] $ (0.53) $ (0.13) $ 0.94
Diluted income (loss) per share (in dollars per share) $ 0.21 [2] $ 0.02 [2] $ (0.16) [2] $ (0.60) [2] $ (0.15) [2] $ 0.01 [2] $ 0.02 [2] $ (0.01) [2] $ (0.53) $ (0.13) $ 0.92
[1] In May 2012, we completed the sale of our Broadcast Servers and Storage business and our Media Services business. As a result, both businesses have been reported as discontinued operations in our consolidated financial statements. For all periods presented, our consolidated financial statements have been recast to reflect the presentation of discontinued operations.
[2] The sum of per share data may not agree to annual amounts due to rounding.