Certain Balance Sheet Components Property, Plant, and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014
Property, Plant and Equipment [Line Items]
Machinery and equipment	$ 289,015				$ 287,448
Computers and Software, Gross	104,310				100,212
Buildings, furniture, and improvements	127,531				134,461
Land	19,882				21,759
Construction in progress, including purchased equipment	32,639				20,583
Total cost	573,377				564,463
Accumulated depreciation	(383,121)				(357,311)
Property, plant, and equipment, net	$ 190,256	$ 190,699	$ 194,756	$ 192,064	$ 207,152	$ 221,141	$ 233,571	$ 236,045