Certain Balance Sheet Components Certain Balance Sheet Components - Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 155,956	$ 140,209
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(123,792)	(113,197)
Property, Plant and Equipment, Net	32,164	27,012
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	97,989	93,010
Software Development [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	34,519	29,391
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	14,455	10,000
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 8,993	$ 7,808