Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues	$ 1,132,018	$ 892,208	$ 897,027
Cost of revenues	577,365	478,916	460,115
Gross profit	554,653	413,292	436,912
Operating expenses:
Research and development	75,716	70,161	68,644
Selling, general, and administrative	389,430	307,605	289,916
Total operating expenses	465,146	377,766	358,560
Income from operations	89,507	35,526	78,352
Interest and other income (expense), net	(23,500)	(6,177)	(4,419)
Income before provision for income taxes	66,007	29,349	73,933
Provision for (benefit from) income taxes	(11,842)	(2,845)	12,595
Net income	$ 77,849	$ 32,194	$ 61,338
Net income per share:
Basic (in dollars per share)	$ 1.79	$ 0.76	$ 1.48
Diluted (in dollars per share)	$ 1.62	$ 0.74	$ 1.43
Weighted-average shares outstanding:
Basic (in shares)	43,475	42,583	41,462
Diluted (in shares)	47,943	43,743	42,943
Product revenues
Revenues	$ 812,512	$ 636,031	$ 659,602
Cost of revenues	422,855	354,004	344,914
Services and other revenues
Revenues	319,506	256,177	237,425
Cost of revenues	$ 154,510	$ 124,912	$ 115,201