DISAGGREGATION OF REVENUE - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue
Total revenues	$ 2,137,803	$ 1,951,751	$ 1,850,204
Corporate
Disaggregation of Revenue
Total revenues	6,953	7,330	5,822
Corporate and Elimination
Disaggregation of Revenue
Total revenues	6,953	7,330	5,822
Enterprise Software \| Operating segments
Disaggregation of Revenue
Total revenues	1,511,602	1,349,655	1,257,186
Platform Technologies \| Operating segments
Disaggregation of Revenue
Total revenues	619,248	594,766	587,196
Recurring revenues
Disaggregation of Revenue
Total revenues	1,806,063	1,626,173	1,480,759
Recurring revenues \| Corporate
Disaggregation of Revenue
Total revenues	0	0	0
Recurring revenues \| Enterprise Software
Disaggregation of Revenue
Total revenues	1,232,930	1,077,043	970,466
Recurring revenues \| Platform Technologies
Disaggregation of Revenue
Total revenues	573,133	549,130	510,293
Non-recurring revenues
Disaggregation of Revenue
Total revenues	331,740	325,578	369,445
Non-recurring revenues \| Corporate
Disaggregation of Revenue
Total revenues	6,953	7,330	5,822
Non-recurring revenues \| Enterprise Software
Disaggregation of Revenue
Total revenues	278,672	272,612	286,720
Non-recurring revenues \| Platform Technologies
Disaggregation of Revenue
Total revenues	46,115	45,636	76,903
SaaS
Disaggregation of Revenue
Total revenues	644,779	527,977	428,526
SaaS \| Corporate
Disaggregation of Revenue
Total revenues	0	0	0
SaaS \| Enterprise Software \| Operating segments
Disaggregation of Revenue
Total revenues	559,842	459,544	378,953
SaaS \| Platform Technologies \| Operating segments
Disaggregation of Revenue
Total revenues	84,937	68,433	49,573
SaaS \| Recurring revenues
Disaggregation of Revenue
Total revenues	644,779	527,977	428,526
SaaS \| Recurring revenues \| Corporate
Disaggregation of Revenue
Total revenues	0	0	0
SaaS \| Recurring revenues \| Enterprise Software
Disaggregation of Revenue
Total revenues	559,842	459,544	378,953
SaaS \| Recurring revenues \| Platform Technologies
Disaggregation of Revenue
Total revenues	84,937	68,433	49,573
Transaction-based fees
Disaggregation of Revenue
Total revenues	698,152	631,535	583,778
Transaction-based fees \| Corporate
Disaggregation of Revenue
Total revenues	0	0
Transaction-based fees \| Enterprise Software \| Operating segments
Disaggregation of Revenue
Total revenues	234,633	174,718	147,370
Transaction-based fees \| Platform Technologies \| Operating segments
Disaggregation of Revenue
Total revenues	463,519	456,817	436,408
Transaction-based fees \| Recurring revenues
Disaggregation of Revenue
Total revenues	698,152	631,535	583,778
Transaction-based fees \| Recurring revenues \| Corporate
Disaggregation of Revenue
Total revenues	0	0	0
Transaction-based fees \| Recurring revenues \| Enterprise Software
Disaggregation of Revenue
Total revenues	234,633	174,718	147,370
Transaction-based fees \| Recurring revenues \| Platform Technologies
Disaggregation of Revenue
Total revenues	463,519	456,817	436,408
Maintenance
Disaggregation of Revenue
Total revenues	463,132	466,661	468,455
Maintenance \| Corporate
Disaggregation of Revenue
Total revenues	0	0	0
Maintenance \| Enterprise Software \| Operating segments
Disaggregation of Revenue
Total revenues	438,455	442,781	444,143
Maintenance \| Platform Technologies \| Operating segments
Disaggregation of Revenue
Total revenues	24,677	23,880	24,312
Maintenance \| Recurring revenues
Disaggregation of Revenue
Total revenues	463,132	466,661	468,455
Maintenance \| Recurring revenues \| Corporate
Disaggregation of Revenue
Total revenues	0	0	0
Maintenance \| Recurring revenues \| Enterprise Software
Disaggregation of Revenue
Total revenues	438,455	442,781	444,143
Maintenance \| Recurring revenues \| Platform Technologies
Disaggregation of Revenue
Total revenues	24,677	23,880	24,312
Professional services
Disaggregation of Revenue
Total revenues	263,991	249,976	277,625
Professional services \| Corporate
Disaggregation of Revenue
Total revenues	0	0	0
Professional services \| Enterprise Software \| Operating segments
Disaggregation of Revenue
Total revenues	219,933	209,727	204,970
Professional services \| Platform Technologies \| Operating segments
Disaggregation of Revenue
Total revenues	44,058	40,249	72,655
Professional services \| Non-recurring revenues
Disaggregation of Revenue
Total revenues	263,991	249,976	277,625
Professional services \| Non-recurring revenues \| Corporate
Disaggregation of Revenue
Total revenues	0	0	0
Professional services \| Non-recurring revenues \| Enterprise Software
Disaggregation of Revenue
Total revenues	219,933	209,727	204,970
Professional services \| Non-recurring revenues \| Platform Technologies
Disaggregation of Revenue
Total revenues	44,058	40,249	72,655
Software licenses and royalties
Disaggregation of Revenue
Total revenues	26,357	38,096	59,406
Software licenses and royalties \| Corporate
Disaggregation of Revenue
Total revenues	0	0	0
Software licenses and royalties \| Enterprise Software \| Operating segments
Disaggregation of Revenue
Total revenues	25,292	32,709	55,158
Software licenses and royalties \| Platform Technologies \| Operating segments
Disaggregation of Revenue
Total revenues	1,065	5,387	4,248
Software licenses and royalties \| Non-recurring revenues
Disaggregation of Revenue
Total revenues	26,357	38,096	59,406
Software licenses and royalties \| Non-recurring revenues \| Corporate
Disaggregation of Revenue
Total revenues	0	0	0
Software licenses and royalties \| Non-recurring revenues \| Enterprise Software
Disaggregation of Revenue
Total revenues	25,292	32,709	55,158
Software licenses and royalties \| Non-recurring revenues \| Platform Technologies
Disaggregation of Revenue
Total revenues	1,065	5,387	4,248
Hardware and other \| Non-recurring revenues
Disaggregation of Revenue
Total revenues	41,392	37,506	32,414
Hardware and other \| Non-recurring revenues \| Corporate
Disaggregation of Revenue
Total revenues	6,953	7,330	5,822
Hardware and other \| Non-recurring revenues \| Enterprise Software
Disaggregation of Revenue
Total revenues	33,447	30,176	26,592
Hardware and other \| Non-recurring revenues \| Platform Technologies
Disaggregation of Revenue
Total revenues	$ 992	$ 0	$ 0