Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenue	$ 186,209	$ 151,007	$ 351,987	$ 292,370
Cost of revenue	83,616	67,782	157,947	131,139
Gross profit	102,593	83,225	194,040	161,231
Operating expenses:
Research and development	31,673	27,545	57,629	53,003
Selling, general and administrative	40,883	35,058	73,047	65,611
Litigation expense	2,082	503	4,423	781
Total operating expenses	74,638	63,106	135,099	119,395
Income from operations	27,955	20,119	58,941	41,836
Other income, net	5,200	2,229	3,486	5,569
Income before income taxes	33,155	22,348	62,427	47,405
Income tax expense (benefit)	2,988	1,655	(3,495)	531
Net income	$ 30,167	$ 20,693	$ 65,922	$ 46,874
Net income per share
Basic (in dollars per share)	$ 0.67	$ 0.48	$ 1.48	$ 1.09
Diluted (in dollars per share)	$ 0.64	$ 0.45	$ 1.41	$ 1.03
Weighted-average shares outstanding:
Basic (in shares)	44,785	43,109	44,620	42,929
Diluted (in shares)	46,831	45,483	46,750	45,358