Certain Balance Sheet Components Inventories (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Inventories [Line Items]
Materials	$ 115,331	$ 111,191
Work in process	10,836	9,400
Finished goods	62,843	69,874
Total inventories	$ 189,010	$ 190,465