CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Revenue:
Total revenue	$ 425,077	$ 363,226
Cost of sales:
Amortization	17,252	14,949
Total cost of sales	64,760	62,103
Gross profit	360,317	301,123
Operating expenses:
Selling, general and administrative	169,755	146,215
Research and development	105,274	100,479
Amortization	4,125	4,407
Total operating expenses	279,154	251,101
Operating income	81,163	50,022
Interest income	527	517
Interest expense	(2,967)	(3,315)
Other (expense) income, net	(694)	399
Income before income tax provision (benefit)	78,029	47,623
Income tax provision (benefit)	7,041	(24,775)
Net income	$ 70,988	$ 72,398
Earnings per share – basic:
Earnings per share	$ 0.81	$ 0.83
Weighted average shares	87,122	86,808
Earnings per share – diluted:
Earnings per share	$ 0.81	$ 0.82
Weighted average shares	87,750	87,986
Software licenses
Revenue:
Total revenue	$ 157,445	$ 132,604
Cost of sales:
Cost of sales:	8,436	7,606
Maintenance and service
Revenue:
Total revenue	267,632	230,622
Cost of sales:
Cost of sales:	$ 39,072	$ 39,548