UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Net sales	$ 413,601	$ 311,754	$ 1,131,249	$ 853,793
Cost of sales	158,329	118,497	439,754	330,834
Gross margin	255,272	193,257	691,495	522,959
Operating expenses:
Sales, general and administrative	123,279	102,023	359,768	287,157
Research and development	76,880	59,127	219,747	165,090
Total operating expenses	200,159	161,150	579,515	452,247
Income from operations	55,113	32,107	111,980	70,712
Interest and other income (loss), net	14,310	(11,249)	(12,782)	91,076
Income before provision for income taxes	69,423	20,858	99,198	161,788
Provision for (benefit from) income taxes	10,026	8,727	(17,758)	43,824
Net income	$ 59,397	$ 12,131	$ 116,956	$ 117,964
Net income per common and common equivalent shares:
Basic (in dollars per share)	$ 0.79	$ 0.17	$ 1.58	$ 1.66
Diluted (in dollars per share)	$ 0.78	$ 0.17	$ 1.56	$ 1.63
Weighted average number of common and common equivalent shares outstanding:
Basic (in shares)	74,826	71,107	73,904	71,033
Diluted (in shares)	75,952	72,525	75,212	72,386
Net income	$ 59,397	$ 12,131	$ 116,956	$ 117,964
Foreign currency translation adjustments	(6,799)	(2,275)	(5,680)	(5,513)
Unrealized gain (loss) on available-for-sale investments	656	(326)	(10)	(976)
Comprehensive income	53,254	9,530	111,266	111,475
Product
Net sales	256,443	210,398	709,306	586,653
Cost of sales	116,278	93,724	325,054	260,578
Service
Net sales	157,158	101,356	421,943	267,140
Cost of sales	$ 42,051	$ 24,773	$ 114,700	$ 70,256