Property and Equipment - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Subtotal	$ 125,734	$ 124,551
Less: Accumulated depreciation and amortization	(69,382)	(67,777)
Property and equipment, net	56,352	56,774	$ 74,368
Computers Software Machinery And Equipment [Member]
Property, Plant and Equipment [Line Items]
Subtotal	71,769	72,066
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Subtotal	7,848	7,839
Furniture And Fixtures [Member]
Property, Plant and Equipment [Line Items]
Subtotal	6,898	6,313
Building And Improvements [Member]
Property, Plant and Equipment [Line Items]
Subtotal	23,786	23,786
Land [Member]
Property, Plant and Equipment [Line Items]
Subtotal	12,852	12,852
Software Development And Other Equipment In Progress [Member]
Property, Plant and Equipment [Line Items]
Subtotal	$ 2,581	$ 1,695