CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues
Total revenues		$ 297,618	$ 234,995	$ 503,473	$ 444,305
Operating expenses
Cost of revenue	[1]	155,240	116,261	270,181	223,597
Research and development		39,235	37,862	75,429	74,653
Selling and marketing		32,962	33,160	62,392	65,053
General and administrative		49,319	28,837	80,836	57,486
Depreciation and amortization		26,744	21,033	48,610	42,378
Total operating expenses		303,500	237,153	537,448	463,167
Operating loss		(5,882)	(2,158)	(33,975)	(18,862)
Other income (expense)
Interest expense		(15,323)	(9,717)	(26,937)	(19,082)
Interest income		2,997	2,742	6,030	5,486
Other, net		1,402	(1,677)	(510)	(1,732)
Total other income (expense)		(10,924)	(8,652)	(21,417)	(15,328)
Loss before income taxes		(16,806)	(10,810)	(55,392)	(34,190)
Income tax expense (benefit)		(22,531)	3,764	(35,154)	(188)
Net income (loss)		$ 5,725	$ (14,574)	$ (20,238)	$ (34,002)
Income (loss) per common share
Basic (in dollars per share)		$ 0.05	$ (0.13)	$ (0.17)	$ (0.29)
Diluted (in dollars per share)		$ 0.05	$ (0.13)	$ (0.17)	$ (0.29)
Weighted average common shares outstanding
Basic (in shares)		116,586	115,548	116,287	115,595
Diluted (in shares)		118,786	115,548	116,287	115,595
Software as a service and platform as a service
Revenues
Total revenues		$ 172,499	$ 113,600	$ 281,056	$ 217,880
License
Revenues
Total revenues		52,541	45,555	73,619	73,601
Maintenance
Revenues
Total revenues		51,922	55,048	107,033	111,707
Services
Revenues
Total revenues		$ 20,656	$ 20,792	$ 41,765	$ 41,117

[1] The cost of revenue excludes charges for depreciation but includes amortization of purchased and developed software for resale.