CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Total net revenue	$ 507,149	$ 378,831	$ 402,874
Total cost of revenue	247,407	183,834	179,862
Total gross profit	259,742	194,997	223,012
Operating expenses:
Research and development	102,231	82,494	84,614
Selling, general and administrative	138,085	119,611	119,035
Amortization of intangibles	507	3,019	3,139
Restructuring and related charges	110	2,322	3,141
Total operating expenses	240,933	207,446	209,929
Income (loss) from operations	18,809	(12,449)	13,083
Interest expense, net	(10,625)	(11,509)	(11,651)
Loss on convertible debt extinguishment	0	(1,362)	(5,695)
Other income (expense), net	687	(897)	(2,333)
Income (loss) before income taxes	8,871	(26,217)	(6,596)
Provision for (benefit from) income taxes	(4,383)	3,054	(672)
Net income (loss)	$ 13,254	$ (29,271)	$ (5,924)
Net income (loss) per share:
Basic (in dollars per share)	$ 0.13	$ (0.30)	$ (0.07)
Diluted (in dollars per share)	$ 0.12	$ (0.30)	$ (0.07)
Shares used in per share calculations:
Basic (in shares)	101,484	96,971	89,575
Diluted (in shares)	106,171	96,971	89,575
Appliance and integration
Total net revenue	$ 369,767	$ 252,014	$ 275,797
Total cost of revenue	195,445	126,948	130,284
SaaS and service
Total net revenue	137,382	126,817	127,077
Total cost of revenue	$ 51,962	$ 56,886	$ 49,578