UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Net sales	$ 343,043	$ 256,426
Cost of sales	138,941	100,687
Gross margin	204,102	155,739
Operating expenses:
Sales, general and administrative	116,567	90,129
Research and development	70,927	48,416
Total operating expenses	187,494	138,545
Income from operations	16,608	17,194
Interest and other income, net	25,276	55,299
Income before provision for income taxes	41,884	72,493
Provision for (benefit from) income taxes	(3,255)	17,622
Net income	$ 45,139	$ 54,871
Net income per common and common equivalent shares:
Basic (in dollars per share)	$ 0.62	$ 0.77
Diluted (in dollars per share)	$ 0.61	$ 0.76
Weighted average number of common and common equivalent shares outstanding:
Basic (in shares)	72,638	70,950
Diluted (in shares)	73,880	72,349
Net income	$ 45,139	$ 54,871
Foreign currency translation adjustments	1,676	(1,072)
Unrealized gain (loss) on available-for-sale investments	184	(489)
Comprehensive income	46,999	53,310
Product
Net sales	219,389	176,204
Cost of sales	107,584	79,352
Service
Net sales	123,654	80,222
Cost of sales	$ 31,357	$ 21,335