INTANGIBLE ASSETS - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 187,602	$ 187,550
Accumulated Amortization	(134,246)	(124,857)
Net Carrying Amount	53,356	62,693
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	164,352	164,305
Accumulated Amortization	(111,738)	(102,630)
Net Carrying Amount	52,614	61,675
Trade names
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	20,267	20,262
Accumulated Amortization	(19,851)	(19,742)
Net Carrying Amount	416	520
Technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,300	2,300
Accumulated Amortization	(1,974)	(1,802)
Net Carrying Amount	326	498
Licenses
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	683	683
Accumulated Amortization	(683)	(683)
Net Carrying Amount	$ 0	$ 0