Segment and Related Information - Schedule of Segment Revenues and Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information
Total revenues	$ 456,108	$ 294,802
Segment operating income (loss)	55,868	38,208
Intercompany
Segment Reporting Information
Total revenues	(5,589)	(5,276)
Intercompany | Enterprise Software
Segment Reporting Information
Total revenues	5,589	5,276
Intercompany | Platform Technologies
Segment Reporting Information
Total revenues	0	0
Operating segments | Enterprise Software
Segment Reporting Information
Total revenues	310,987	281,486
Segment operating income (loss)	106,529	98,854
Operating segments | Platform Technologies
Segment Reporting Information
Total revenues	150,710	18,592
Segment operating income (loss)	30,733	3,223
Corporate
Segment Reporting Information
Total revenues	(5,589)	(5,276)
Segment operating income (loss)	(53,459)	(50,493)
Operating segment and corporate non-segment
Segment Reporting Information
Segment operating income (loss)	83,803	51,584
Software licenses and royalties
Segment Reporting Information
Total revenues	16,506	14,933
Software licenses and royalties | Enterprise Software
Segment Reporting Information
Total revenues	16,105	14,372
Software licenses and royalties | Platform Technologies
Segment Reporting Information
Total revenues	401	561
Software licenses and royalties | Corporate
Segment Reporting Information
Total revenues	0	0
Subscriptions
Segment Reporting Information
Total revenues	245,443	102,479
Subscriptions | Enterprise Software
Segment Reporting Information
Total revenues	120,316	99,329
Subscriptions | Platform Technologies
Segment Reporting Information
Total revenues	125,127	3,150
Subscriptions | Corporate
Segment Reporting Information
Total revenues	0	0
Software services
Segment Reporting Information
Total revenues	61,497	47,640
Software services | Enterprise Software
Segment Reporting Information
Total revenues	42,649	42,417
Software services | Platform Technologies
Segment Reporting Information
Total revenues	18,848	5,223
Software services | Corporate
Segment Reporting Information
Total revenues	0	0
Maintenance
Segment Reporting Information
Total revenues	117,029	119,112
Maintenance | Enterprise Software
Segment Reporting Information
Total revenues	110,695	109,469
Maintenance | Platform Technologies
Segment Reporting Information
Total revenues	6,334	9,643
Maintenance | Corporate
Segment Reporting Information
Total revenues	0	0
Appraisal services
Segment Reporting Information
Total revenues	8,518	6,465
Appraisal services | Enterprise Software
Segment Reporting Information
Total revenues	8,518	6,465
Appraisal services | Platform Technologies
Segment Reporting Information
Total revenues	0	0
Appraisal services | Corporate
Segment Reporting Information
Total revenues	0	0
Hardware and other
Segment Reporting Information
Total revenues	7,115	4,173
Hardware and other | Enterprise Software
Segment Reporting Information
Total revenues	7,115	4,158
Hardware and other | Platform Technologies
Segment Reporting Information
Total revenues	0	15
Hardware and other | Corporate
Segment Reporting Information
Total revenues	$ 0	$ 0