Quarterly report pursuant to Section 13 or 15(d)

Discontinued Operations - Summary of Selected Financial Information of Business Units (Detail)

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Discontinued Operations - Summary of Selected Financial Information of Business Units (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended
Jul. 31, 2013
Jul. 31, 2012
Jul. 31, 2013
Jul. 31, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Total revenues    $ 1,910 $ 46 $ 10,880
Loss from discontinued operations, before tax (689) (355) (654) (2,532)
Income tax provision (benefit) (131) 61 (131) 37
Loss in investment in affiliates   (31)   (173)
Loss from discontinued operations, after tax (558) (447) (523) (2,742)
Servers and Storage [Member]
        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Total revenues    21 46 1,565
Loss from discontinued operations, before tax (689) (265) (654) (2,284)
Income tax provision (benefit) (131) 25 (131) 50
Loss from discontinued operations, after tax (558) (290) (523) (2,334)
Media Services [Member]
        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Total revenues    1,889    9,315
Loss from discontinued operations, before tax    (90)    (248)
Income tax provision (benefit)    36    (13)
Loss in investment in affiliates   (31)   (173)
Loss from discontinued operations, after tax    (157)    (408)
Product [Member]
        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Total revenues      46 839
Product [Member] | Servers and Storage [Member]
        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Total revenues      46 839
Product [Member] | Media Services [Member]
        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Total revenues          
Service [Member]
        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Total revenues   1,910   10,041
Service [Member] | Servers and Storage [Member]
        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Total revenues   21   726
Service [Member] | Media Services [Member]
        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Total revenues   $ 1,889   $ 9,315