Quarterly report pursuant to Section 13 or 15(d)

Property and Equipment - Schedule of Property and Equipment, Net (Detail)

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Property and Equipment - Schedule of Property and Equipment, Net (Detail) - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Property, Plant and Equipment [Line Items]    
Less: accumulated depreciation and amortization $ (15,326) $ (15,760)
Property and equipment, net 8,593 7,693
Computer software and hardware equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment 9,053 8,769
Furniture, fixtures, and equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment $ 14,866 $ 14,684