Selected Quarterly Financial Information (Unaudited) - Summary of Selected Quarterly Financial Information (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Selected Quarterly Financial Information [Abstract]
Net revenues	$ 99,234	$ 92,062	$ 86,713	$ 73,309	$ 69,674	$ 64,756	$ 61,514	$ 52,125	$ 53,661	$ 50,109	$ 38,376	$ 34,880	$ 351,318	$ 248,069	$ 177,026
Gross profit	74,448	69,162	65,607	53,495	46,646	45,807	41,681	33,887	38,021	34,956	25,224	23,216	262,712	168,021	121,417
Operating income (loss)	153	3,855	1,196	(6,118)	(8,664)	(5,246)	(7,085)	(12,677)	(4,506)	(5,919)	(15,530)	(13,373)	(914)	(33,672)	(39,328)
Net income (loss)	$ 4,260	$ 1,930	$ (1,270)	$ (12,150)	$ (15,631)	$ (11,694)	$ (15,510)	$ (20,724)	$ (10,945)	$ (11,498)	$ (21,174)	$ (18,045)	$ (7,230)	$ (63,559)	$ (61,662)
Basic net income (loss) per ordinary share (in usd per share)	$ 0.04	$ 0.02	$ (0.01)	$ (0.13)
Weighted average number of ordinary shares used in computing basic net income (loss) per share (in shares)	99,226,445	98,485,519	96,356,317	94,811,282
Diluted net income (loss) per ordinary share (in usd per share)	$ 0.04	$ 0.02	$ (0.01)	$ (0.13)
Weighted average number of ordinary shares used in computing diluted net income (loss) per share (in shares)	107,911,519	107,604,578	96,356,317	94,811,282