UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Net sales	$ 374,605	$ 285,613	$ 717,648	$ 542,039
Cost of sales	142,484	111,650	281,425	212,337
Gross margin	232,121	173,963	436,223	329,702
Operating expenses:
Sales, general and administrative	119,922	95,005	236,489	185,134
Research and development	71,940	57,547	142,867	105,963
Total operating expenses	191,862	152,552	379,356	291,097
Income from operations	40,259	21,411	56,867	38,605
Interest and other income (loss), net	(52,368)	47,026	(27,092)	102,325
Income (loss) before provision for income taxes	(12,109)	68,437	29,775	140,930
Provision for (benefit from) income taxes	(24,529)	17,475	(27,784)	35,097
Net income	$ 12,420	$ 50,962	$ 57,559	$ 105,833
Net income per common and common equivalent shares:
Basic (in dollars per share)	$ 0.17	$ 0.72	$ 0.78	$ 1.49
Diluted (in dollars per share)	$ 0.16	$ 0.71	$ 0.77	$ 1.46
Weighted average number of common and common equivalent shares outstanding:
Basic (in shares)	74,224	71,040	73,435	70,995
Diluted (in shares)	75,780	72,283	74,834	72,316
Net income	$ 12,420	$ 50,962	$ 57,559	$ 105,833
Foreign currency translation adjustments	(557)	(2,166)	1,119	(3,238)
Unrealized loss on available-for-sale investments	(850)	(161)	(666)	(650)
Comprehensive income	11,013	48,635	58,012	101,945
Product
Net sales	233,474	200,051	452,863	376,255
Cost of sales	101,192	87,502	208,776	166,854
Service
Net sales	141,131	85,562	264,785	165,784
Cost of sales	$ 41,292	$ 24,148	$ 72,649	$ 45,483