FAIR VALUE MEASUREMENTS - Schedule of Change in Level 3 Fair Values of Contingent Purchase Price Liabilities (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net expense	$ 204	$ 815	$ 638	$ 1,445
Cash settlement paid	$ 9,898	$ 1,373	$ 40,855	$ 29,808
Shares issued (number)	34	4	94	75
Contingent Purchase Price Liabilities | Level 3
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance			$ (114,946)	$ (132,010)
Additions from business acquisitions			(15,184)	(30,317)
Settlement of contingent purchase price liabilities			46,929	33,307
Change in fair value of contingencies			423	(15)
Change in net present value of contingencies			(1,061)	(1,430)
Ending balance	$ (83,839)	$ (130,465)	$ (83,839)	$ (130,465)