Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Total revenue	$ 586,372	$ 617,949	$ 559,157
Total costs	269,887	284,967	240,881
Research and development	84,276	87,608	71,896
Sales and marketing	47,758	56,860	51,262
General and administrative	61,444	64,603	52,618
Depreciation and amortization	8,946	7,987	8,613
Total costs and expenses	472,311	502,025	425,270
Operating income	114,061	115,924	133,887
Interest income	98	715	1,067
Other (loss) income, net	(383)	(562)	1,277
Income before income taxes	113,776	116,077	136,231
Income tax provision	26,536	30,315	31,541
Net income	$ 87,240	$ 85,762	$ 104,690
Basic earnings per share	$ 1.37	$ 1.33	$ 1.58
Diluted earnings per share	$ 1.36	$ 1.32	$ 1.58
Weighted average number of shares:
Basic	63,538	64,397	66,201
Diluted	64,333	65,103	66,434
Cloud Subscriptions
Total revenue	$ 79,830	$ 46,831	$ 23,104
Software License
Total revenue	38,284	48,855	45,368
Total costs	2,894	2,626	5,297
Maintenance
Total revenue	147,748	149,230	147,033
Services
Total revenue	303,569	360,516	329,685
Hardware
Total revenue	16,941	12,517	13,967
Cloud Subscriptions, Maintenance and Services
Total costs	$ 266,993	$ 282,341	$ 235,584