Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Total revenue	$ 663,643	$ 586,372	$ 617,949
Total costs	297,827	269,887	284,967
Research and development	97,628	84,276	87,608
Sales and marketing	57,855	47,758	56,860
General and administrative	68,086	61,444	64,603
Depreciation and amortization	7,914	8,946	7,987
Total costs and expenses	529,310	472,311	502,025
Operating income	134,333	114,061	115,924
Interest income	68	98	715
Other loss, net	(329)	(383)	(562)
Income before income taxes	134,072	113,776	116,077
Income tax provision	23,600	26,536	30,315
Net income	$ 110,472	$ 87,240	$ 85,762
Basic earnings per share	$ 1.74	$ 1.37	$ 1.33
Diluted earnings per share	$ 1.72	$ 1.36	$ 1.32
Weighted average number of shares:
Basic	63,445	63,538	64,397
Diluted	64,323	64,333	65,103
Cloud Subscriptions
Total revenue	$ 122,195	$ 79,830	$ 46,831
Software License
Total revenue	37,070	38,284	48,855
Total costs	2,309	2,894	2,626
Maintenance
Total revenue	145,841	147,748	149,230
Services
Total revenue	334,799	303,569	360,516
Hardware
Total revenue	23,738	16,941	12,517
Cloud Subscriptions, Maintenance and Services
Total costs	$ 295,518	$ 266,993	$ 282,341