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Property and Equipment, Net - Summary of Property and Equipment, Net (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Property, Plant and Equipment [Line Items]    
Total property and equipment $ 88,618 $ 88,385
Accumulated depreciation and amortization (68,456) (69,910)
Property and equipment, net 20,162 18,475
Buildings and Leasehold Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Total property and equipment 18,075 19,371
Furniture and Fixtures [Member]    
Property, Plant and Equipment [Line Items]    
Total property and equipment 23,515 21,979
Capitalized Software [Member]    
Property, Plant and Equipment [Line Items]    
Total property and equipment 35,632 35,549
Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Total property and equipment $ 11,396 $ 11,486