INTANGIBLE ASSETS - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 206,605	$ 206,897
Accumulated Amortization	(131,198)	(118,579)
Net Carrying Amount	75,407	88,318
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	165,231	165,381
Accumulated Amortization	(91,296)	(79,081)
Net Carrying Amount	73,935	86,300
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	4,281	4,357
Accumulated Amortization	(4,281)	(4,357)
Net Carrying Amount	0	0
Trade names
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	20,563	20,590
Accumulated Amortization	(19,830)	(19,606)
Net Carrying Amount	733	984
Technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,707	2,731
Accumulated Amortization	(1,978)	(1,773)
Net Carrying Amount	729	958
Licenses
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	840	850
Accumulated Amortization	(830)	(774)
Net Carrying Amount	10	76
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	12,983	12,988
Accumulated Amortization	(12,983)	(12,988)
Net Carrying Amount	$ 0	$ 0