Accrued Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Disclosure Accrued Liabilities [Abstract]
Accrued payroll and benefits	$ 56,292	$ 79,214
Accrued sales and marketing expenses	14,230	11,970
Accrued sales rebate	10,751	10,342
Accrued sales tax and value added tax	7,080	5,032
Accrued income taxes	4,760	4,210
Accrued professional fees	4,092	3,604
Accrued warranty	4,301	3,841
Other accrued liabilities	24,125	16,119
Total accrued liabilities	$ 125,631	$ 134,332