Property and Equipment - Property and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 418,914	$ 408,808
Less: Accumulated depreciation	306,952	298,928
Property and equipment, net	111,962	109,880
Land [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	3,447	3,600
Buildings and Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	96,926	94,786
Equipment, Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	291,993	293,857
Capitalized Internally Developed Software Costs [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	17,299	7,963
Property and equipment, net	8,135	1,270
Transportation Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	546	531
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 8,703	$ 8,071