INTANGIBLE ASSETS - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 187,550	$ 206,605
Accumulated Amortization	(124,857)	(131,198)
Net Carrying Amount	62,693	75,407
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	164,305	165,231
Accumulated Amortization	(102,630)	(91,296)
Net Carrying Amount	61,675	73,935
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount		4,281
Accumulated Amortization		(4,281)
Net Carrying Amount		0
Trade names
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	20,262	20,563
Accumulated Amortization	(19,742)	(19,830)
Net Carrying Amount	520	733
Technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,300	2,707
Accumulated Amortization	(1,802)	(1,978)
Net Carrying Amount	498	729
Licenses
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	683	840
Accumulated Amortization	(683)	(830)
Net Carrying Amount	$ 0	10
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount		12,983
Accumulated Amortization		(12,983)
Net Carrying Amount		$ 0