Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenues:
Total revenues	$ 1,951,751	$ 1,850,204	$ 1,592,287
Cost of revenues:
Total cost of revenues	1,090,652	1,066,341	882,643
Gross profit	861,099	783,863	709,644
Sales and marketing expense	149,770	135,743	118,624
General and administrative expense	308,575	267,324	271,955
Research and development expense	109,585	105,184	93,481
Amortization of other intangibles	74,632	61,363	44,849
Operating income	218,537	214,249	180,735
Interest expense	(23,629)	(28,379)	(23,298)
Other income, net	3,328	1,723	1,544
Income before income taxes	198,236	187,593	158,981
Income tax provision (benefit)	32,317	23,353	(2,477)
Net income	$ 165,919	$ 164,240	$ 161,458
Earnings per common share:
Basic (in dollars per share)	$ 3.95	$ 3.95	$ 3.95
Diluted (in dollars per share)	$ 3.88	$ 3.87	$ 3.82
Subscriptions
Revenues:
Total revenues	$ 1,159,512	$ 1,012,304	$ 784,435
Maintenance
Revenues:
Total revenues	466,661	468,455	474,287
Professional services
Revenues:
Total revenues	249,976	277,625	237,179
Software licenses and royalties
Revenues:
Total revenues	38,096	59,406	74,452
Cost of revenues:
Total cost of revenues	10,821	6,083	3,552
Hardware and other
Revenues:
Total revenues	37,506	32,414	21,934
Cost of revenues:
Total cost of revenues	29,923	23,674	12,946
Subscriptions, maintenance and professional services
Cost of revenues:
Total cost of revenues	1,001,221	977,885	818,219
Amortization of software development
Cost of revenues:
Total cost of revenues	12,625	6,507	2,325
Amortization of acquired software
Cost of revenues:
Total cost of revenues	$ 36,062	$ 52,192	$ 45,601