Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Total revenue	$ 159,781	$ 150,163
Total cost of revenue	31,603	33,422
Gross profit	128,178	116,741
Operating expenses:
Research and development	43,094	38,276
Sales and marketing	35,682	32,070
General and administrative	23,569	23,926
Amortization of intangible assets	5,903	4,877
Other operating income, net	(781)	(617)
Total operating expenses	107,467	98,532
Operating income	20,711	18,209
Interest expense	585	2,973
Other expense, net	2,068	835
Income before income taxes	18,058	14,401
Income tax expense	6,530	41
Net income	$ 11,528	$ 14,360
Income per share:
Net income per share attributable to common stockholders, basic	$ 0.15	$ 0.19
Net income per share attributable to common stockholders, diluted	$ 0.13	$ 0.18
Weighted average shares outstanding:
Weighted average number of shares used in computing net income per share, basic	79,462	74,651
Weighted average number of shares used in computing net income per share, diluted	87,261	79,295
Total Software and Related Services [Member]
Total revenue	$ 149,958	$ 137,639
Total cost of revenue	23,441	23,072
License [Member]
Total revenue	106,169	96,395
Total cost of revenue	4,687	5,395
Maintenance and Other Services [Member]
Total revenue	34,728	33,146
Total cost of revenue	12,719	11,555
Total Software [Member]
Total revenue	140,897	129,541
Total cost of revenue	17,406	16,950
Software Related Services [Member]
Total revenue	9,061	8,098
Total cost of revenue	6,035	6,122
Client Engineering Services [Member]
Total revenue	8,012	10,677
Total cost of revenue	6,641	8,888
Other [Member]
Total revenue	1,811	1,847
Total cost of revenue	$ 1,521	$ 1,462