Accrued Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Disclosure Accrued Liabilities [Abstract]
Accrued payroll and benefits	$ 84,418	$ 79,214
Accrued expenses	38,983	21,811
Accrued income taxes	10,486	4,210
Accrued sales rebate	9,293	10,342
Accrued sales tax and value added tax	8,693	5,032
Accrued professional fees	8,181	3,604
Accrued warranty	5,055	3,841
Other accrued liabilities	8,742	6,278
Total accrued liabilities	$ 173,851	$ 134,332