Balance Sheet Details (Schedule of Accounts Payable and Accrued Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Balance Sheet Related Disclosures [Abstract]
Accounts payable	$ 21,242	$ 13,109
Income tax payable	1,737	1,066
Accrued warranty	1,413	1,213	$ 1,288
Other accrued liabilities	8,366	3,793
Total accounts payable and accrued liabilities	$ 32,758	$ 19,181