UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Net sales	$ 311,754	$ 231,989	$ 853,793	$ 645,803
Cost of sales	118,497	87,422	330,834	239,954
Gross margin	193,257	144,567	522,959	405,849
Operating expenses:
Sales, general and administrative	102,023	99,295	287,157	403,554
Research and development	59,127	42,382	165,090	143,352
Total operating expenses	161,150	141,677	452,247	546,906
Income (loss) from operations	32,107	2,890	70,712	(141,057)
Interest and other income (expense), net	(11,249)	(5,530)	91,076	36,896
Income (loss) before provision for income taxes	20,858	(2,640)	161,788	(104,161)
Provision for (benefit from) income taxes	8,727	(51,164)	43,824	(57,651)
Net income (loss)	$ 12,131	$ 48,524	$ 117,964	$ (46,510)
Net income (loss) per common and common equivalent shares:
Basic (in dollars per share)	$ 0.17	$ 0.73	$ 1.66	$ (0.71)
Diluted (in dollars per share)	$ 0.17	$ 0.67	$ 1.63	$ (0.71)
Weighted average number of common and common equivalent shares outstanding:
Basic (in shares)	71,107	66,192	71,033	65,139
Diluted (in shares)	72,525	72,441	72,386	65,139
Net income (loss)	$ 12,131	$ 48,524	$ 117,964	$ (46,510)
Foreign currency translation adjustments	(2,275)	(793)	(5,513)	(1,161)
Unrealized losses on available-for-sale investments	(326)		(976)
Comprehensive income (loss)	9,530	47,731	111,475	(47,671)
Product
Net sales	210,398	165,803	586,653	463,116
Cost of sales	93,724	71,336	260,578	195,253
Service
Net sales	101,356	66,186	267,140	182,687
Cost of sales	$ 24,773	$ 16,086	$ 70,256	$ 44,701