Certain Balance Sheet Components Property, Plant, and Equipment, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Machinery and equipment	$ 278,609	$ 287,448
Computers and software	107,328	100,212
Buildings, furniture, and improvements	130,009	134,461
Land	20,758	21,186
Construction in progress, including purchased equipment	24,784	21,007
Total cost	561,488	564,314
Accumulated depreciation	(371,193)	(356,525)
Property, plant, and equipment, net	$ 190,295	$ 207,789