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Property and Equipment, Net - Summary of Property and Equipment, Net (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Property, Plant and Equipment [Line Items]    
Total property and equipment $ 86,265 $ 82,321
Accumulated depreciation and amortization (67,098) (64,538)
Property and equipment, net 19,167 17,783
Buildings and leasehold improvements [Member]
    
Property, Plant and Equipment [Line Items]    
Total property and equipment 18,459 17,892
Furniture and fixtures [Member]
    
Property, Plant and Equipment [Line Items]    
Total property and equipment 22,407 20,506
Capitalized software [Member]
    
Property, Plant and Equipment [Line Items]    
Total property and equipment 34,983 33,739
Equipment [Member]
    
Property, Plant and Equipment [Line Items]    
Total property and equipment $ 10,416 $ 10,184