Quarterly report pursuant to sections 13 or 15(d)

Summary of Significant Accounting Policies - Additional Information (Detail)

v2.4.0.6
Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended 12 Months Ended
Sep. 30, 2012
Jun. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Mar. 31, 2012
Financing Receivable, Impaired [Line Items]            
Advertising expense for continuing operations $ 0   $ 2 $ 0 $ 6  
Other comprehensive income (loss) foreign currency translation adjustment net of tax (34) 31   (3) 47  
Account receivable major customer percentage 11.00%     11.00%   39.00%
Revenue major customer percentage       35.00% 44.00%  
Impairment of goodwill             2,969
Impairment of intangible assets            $ 2,319
Customer A
           
Financing Receivable, Impaired [Line Items]            
Revenue from other major customers, percentage       13.00%    
Leasehold Improvements
           
Financing Receivable, Impaired [Line Items]            
Property and equipment, estimated useful lives       Lesser of 8 to 10 years or the term    
Other assets
           
Financing Receivable, Impaired [Line Items]            
Property and equipment, estimated useful lives       5 years    
Minimum
           
Financing Receivable, Impaired [Line Items]            
Intangible assets acquired, useful life       5 years    
Maximum
           
Financing Receivable, Impaired [Line Items]            
Intangible assets acquired, useful life       8 years