UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenue
Total revenue	$ 212,546	$ 235,182
Cost of revenue
Total cost of revenue	74,437	75,614
Gross profit	138,109	159,568
Operating expenses
Selling and marketing	108,865	88,383
Research and development	50,596	46,785
General and administrative	12,676	16,464
Total operating expenses	172,137	151,632
(Loss) income from operations	(34,028)	7,936
Foreign currency transaction loss	(3,712)	(1,085)
Interest income, net	723	764
Other income, net	0	363
(Loss) income before benefit from income taxes	(37,017)	7,978
Benefit from income taxes	(8,300)	(4,222)
Net (loss) income	$ (28,717)	$ 12,200
(Loss) earnings per share
Basic (in dollars per share)	$ (0.37)	$ 0.16
Diluted (in dollars per share)	$ (0.37)	$ 0.15
Weighted-average number of common shares outstanding
Basic (in shares)	78,584	78,236
Diluted (in shares)	78,584	83,102
Software license
Revenue
Total revenue	$ 63,264	$ 87,773
Cost of revenue
Total cost of revenue	1,378	1,255
Maintenance
Revenue
Total revenue	67,706	64,525
Cost of revenue
Total cost of revenue	6,335	6,082
Services
Revenue
Total revenue	81,576	82,884
Cost of revenue
Total cost of revenue	$ 66,724	$ 68,277