Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statements of Operations:
Revenue	$ 125,342	$ 107,504	$ 364,516	$ 329,187
Cost of revenue	70,018	52,861	197,237	163,988
Gross profit	55,324	54,643	167,279	165,199
Operating expenses
Marketing and sales	21,422	16,705	61,946	51,821
Research and development	10,614	7,915	33,855	25,550
General and administrative	16,361	12,354	44,186	38,983
Total operating expenses	48,397	36,974	139,987	116,354
Income from operations	6,927	17,669	27,292	48,845
Other income (expense), net	136	728	(40)	2,549
Income before income taxes	7,063	18,397	27,252	51,394
Provision for income taxes	2,228	3,700	5,790	10,106
Net income	$ 4,835	$ 14,697	$ 21,462	$ 41,288
Net income per share:
Basic (in dollars per share)	$ 0.17	$ 0.55	$ 0.78	$ 1.54
Diluted (in dollars per share)	$ 0.17	$ 0.55	$ 0.77	$ 1.54
Shares used to compute net income per share:
Basic (in shares)	27,713,229	26,736,709	27,638,611	26,724,715
Diluted (in shares)	27,730,105	26,886,433	27,707,784	26,861,647
Comprehensive Income (net of tax)
Comprehensive income	$ (508)	$ 17,807	$ 11,424	$ 41,782