Balance Sheet Components Accrued Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Notes To Financial Statements [Abstract]
Accrued payroll and benefits	$ 111,831	$ 127,109
Accrued expenses	52,791	39,323
Current operating lease liabilities	16,144	0
Accrued warranty	10,499	8,551
Accrued property, plant and equipment	9,969	8,193
Accrued sales return reserve	9,217	6,534
Accrued customer credits and deposits	8,796	12,439
Accrued sales tax and value added tax	6,864	6,276
Accrued professional fees	6,454	6,752
Accrued income taxes	4,407	5,752
Accrued sales rebate	4,210	5,668
Other accrued liabilities	4,452	8,082
Total accrued liabilities	$ 245,634	$ 234,679