Certain Balance Sheet Components Property, Plant, and Equipment, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment, Net [Abstract]
Machinery and equipment	$ 287,378	$ 279,746
Computers and software	101,648	98,125
Buildings, furniture, and improvements	125,383	122,680
Land	17,604	17,179
Construction in progress, including purchased equipment	29,612	29,358
Total cost	561,625	547,088
Accumulated depreciation	(382,978)	(370,630)
Property, plant, and equipment, net	$ 178,647	$ 176,458