Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenue:
Total revenue	$ 261,974	$ 246,015	$ 518,876	$ 492,965
Cost of revenue:
Cost of recurring revenue	27,516	21,822	54,474	44,323
Amortization of acquired technologies	41,135	44,834	84,256	89,326
Total cost of revenue	68,651	66,656	138,730	133,649
Gross profit	193,323	179,359	380,146	359,316
Operating expenses:
Sales and marketing	82,371	70,712	165,668	143,090
Research and development	39,106	30,745	76,867	62,590
General and administrative	50,397	24,467	98,107	54,222
Amortization of acquired intangibles	18,158	18,294	38,215	36,590
Total operating expenses	190,032	144,218	378,857	296,492
Operating income	3,291	35,141	1,289	62,824
Other income (expense):
Interest expense, net	(16,191)	(18,313)	(32,365)	(42,408)
Other income (expense), net	(321)	363	(194)	(395)
Total other income (expense)	(16,512)	(17,950)	(32,559)	(42,803)
Income (loss) before income taxes	(13,221)	17,191	(31,270)	20,021
Income tax expense (benefit)	(1,597)	4,346	(12,486)	6,761
Net income (loss)	(11,624)	12,845	(18,784)	13,260
Net income (loss) available to common stockholders	$ (11,624)	$ 12,772	$ (18,784)	$ 13,169
Net income (loss) available to common stockholders per share:
Basic earnings (loss) per share (in dollars per share)	$ (0.07)	$ 0.08	$ (0.12)	$ 0.09
Diluted earnings (loss) per share (in dollars per share)	$ (0.07)	$ 0.08	$ (0.12)	$ 0.08
Weighted-average shares used to compute net income (loss) available to common stockholders per share:
Weighted-average shares used in computing basic earnings (loss) per share (in shares)	157,854	155,122	157,491	154,795
Weighted-average shares used in computing diluted earnings (loss) per share (in shares)	157,854	157,449	157,491	156,937
Recurring Revenue
Revenue:
Total revenue	$ 235,296	$ 212,338	$ 467,324	$ 422,322
Subscription
Revenue:
Total revenue	112,429	95,840	221,417	189,475
Cost of revenue:
Amortization of acquired technologies	3,807	9,280	9,592	18,200
Maintenance
Revenue:
Total revenue	122,867	116,498	245,907	232,847
License
Revenue:
Total revenue	26,678	33,677	51,552	70,643
Cost of revenue:
Amortization of acquired technologies	$ 37,328	$ 35,554	$ 74,664	$ 71,126