Disaggregation of Revenue - Schedule of disaggregation of revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disaggregation of Revenue
Total revenues	$ 468,685	$ 404,075	$ 924,792	$ 698,877
Intercompany
Disaggregation of Revenue
Total revenues	(5,342)	(5,621)	(10,931)	(10,897)
Corporate
Disaggregation of Revenue
Total revenues	(1,732)	(2,682)	(7,321)	(7,958)
Corporate and Elimination
Disaggregation of Revenue
Total revenues	(1,732)	(2,682)	(7,321)	(7,958)
Enterprise Software \| Intercompany
Disaggregation of Revenue
Total revenues	5,342	5,621	10,931	10,897
Enterprise Software \| Operating segments
Disaggregation of Revenue
Total revenues	315,570	287,783	626,556	569,269
Platform Technologies \| Intercompany
Disaggregation of Revenue
Total revenues	0	0	0	0
Platform Technologies \| Operating segments
Disaggregation of Revenue
Total revenues	154,847	118,974	305,557	137,566
Recurring revenues
Disaggregation of Revenue
Total revenues	372,631	319,179	735,103	540,770
Recurring revenues \| Corporate
Disaggregation of Revenue
Total revenues	0	0	0	0
Recurring revenues \| Enterprise Software
Disaggregation of Revenue
Total revenues	239,454	212,432	470,465	421,230
Recurring revenues \| Platform Technologies
Disaggregation of Revenue
Total revenues	133,177	106,747	264,638	119,540
Non-recurring revenues
Disaggregation of Revenue
Total revenues	96,054	84,896	189,689	158,107
Non-recurring revenues \| Corporate
Disaggregation of Revenue
Total revenues	3,610	2,939	3,610	2,939
Non-recurring revenues \| Enterprise Software
Disaggregation of Revenue
Total revenues	70,774	69,730	145,160	137,142
Non-recurring revenues \| Platform Technologies
Disaggregation of Revenue
Total revenues	21,670	12,227	40,919	18,026
Products and services transferred at a point in time
Disaggregation of Revenue
Total revenues	21,791	22,445	42,974	38,676
Products and services transferred over time
Disaggregation of Revenue
Total revenues	446,894	381,630	881,818	660,201
Software licenses and royalties
Disaggregation of Revenue
Total revenues	15,009	17,604	31,515	32,537
Software licenses and royalties \| Corporate
Disaggregation of Revenue
Total revenues	0	0	0	0
Software licenses and royalties \| Enterprise Software
Disaggregation of Revenue
Total revenues	14,623	16,239	30,728	30,611
Software licenses and royalties \| Platform Technologies
Disaggregation of Revenue
Total revenues	386	1,365	787	1,926
Software licenses and royalties \| Products and services transferred at a point in time
Disaggregation of Revenue
Total revenues	12,683	14,755	26,752	26,813
Software licenses and royalties \| Products and services transferred over time
Disaggregation of Revenue
Total revenues	2,326	2,849	4,763	5,724
Subscriptions
Disaggregation of Revenue
Total revenues	255,816	199,558	501,259	302,037
Subscriptions \| Corporate
Disaggregation of Revenue
Total revenues	0	0	0	0
Subscriptions \| Enterprise Software
Disaggregation of Revenue
Total revenues	128,694	102,617	249,010	201,946
Subscriptions \| Platform Technologies
Disaggregation of Revenue
Total revenues	127,122	96,941	252,249	100,091
Subscriptions \| Products and services transferred at a point in time
Disaggregation of Revenue
Total revenues	0	0	0	0
Subscriptions \| Products and services transferred over time
Disaggregation of Revenue
Total revenues	255,816	199,558	501,259	302,037
Software services
Disaggregation of Revenue
Total revenues	63,125	53,337	124,622	100,977
Software services \| Corporate
Disaggregation of Revenue
Total revenues	0	0	0	0
Software services \| Enterprise Software
Disaggregation of Revenue
Total revenues	41,841	42,478	84,490	84,895
Software services \| Platform Technologies
Disaggregation of Revenue
Total revenues	21,284	10,859	40,132	16,082
Software services \| Products and services transferred at a point in time
Disaggregation of Revenue
Total revenues	0	0	0	0
Software services \| Products and services transferred over time
Disaggregation of Revenue
Total revenues	63,125	53,337	124,622	100,977
Maintenance
Disaggregation of Revenue
Total revenues	116,815	119,621	233,844	238,733
Maintenance \| Corporate
Disaggregation of Revenue
Total revenues	0	0	0	0
Maintenance \| Enterprise Software
Disaggregation of Revenue
Total revenues	110,760	109,815	221,455	219,284
Maintenance \| Platform Technologies
Disaggregation of Revenue
Total revenues	6,055	9,806	12,389	19,449
Maintenance \| Products and services transferred at a point in time
Disaggregation of Revenue
Total revenues	0	0	0	0
Maintenance \| Products and services transferred over time
Disaggregation of Revenue
Total revenues	116,815	119,621	233,844	238,733
Appraisal services
Disaggregation of Revenue
Total revenues	8,812	6,265	17,330	12,730
Appraisal services \| Corporate
Disaggregation of Revenue
Total revenues	0	0	0	0
Appraisal services \| Enterprise Software
Disaggregation of Revenue
Total revenues	8,812	6,265	17,330	12,730
Appraisal services \| Platform Technologies
Disaggregation of Revenue
Total revenues	0	0	0	0
Appraisal services \| Products and services transferred at a point in time
Disaggregation of Revenue
Total revenues	0	0	0	0
Appraisal services \| Products and services transferred over time
Disaggregation of Revenue
Total revenues	8,812	6,265	17,330	12,730
Hardware and other
Disaggregation of Revenue
Total revenues	9,108	7,690	16,222	11,863
Hardware and other \| Corporate
Disaggregation of Revenue
Total revenues	3,610	2,939	3,610	2,939
Hardware and other \| Enterprise Software
Disaggregation of Revenue
Total revenues	5,498	4,748	12,612	8,906
Hardware and other \| Platform Technologies
Disaggregation of Revenue
Total revenues	0	3	0	18
Hardware and other \| Products and services transferred at a point in time
Disaggregation of Revenue
Total revenues	9,108	7,690	16,222	11,863
Hardware and other \| Products and services transferred over time
Disaggregation of Revenue
Total revenues	$ 0	$ 0	$ 0	$ 0