Certain Balance Sheet Components Property, Plant, and Equipment, Net (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Machinery and equipment	$ 281,496	$ 287,448
Computers and software	106,399	100,212
Buildings, furniture, and improvements	131,057	134,461
Land	21,238	21,186
Construction in progress, including purchased equipment	23,332	21,007
Total cost	563,522	564,314
Accumulated depreciation	(368,012)	(356,525)
Property, plant, and equipment, net	$ 195,510	$ 207,789