Certain Balance Sheet Components Inventories (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Inventories [Line Items]
Materials	$ 112,507	$ 111,191
Work in process	9,919	9,400
Finished goods	67,127	69,874
Total inventories	$ 189,553	$ 190,465