INTANGIBLE ASSETS - Schedule of Identifiable Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Identifiable intangible assets [Abstract]
Gross Carrying Amount	$ 476,310	$ 472,703
Accumulated Amortization	266,840	259,408
Customer relationships & lists
Identifiable intangible assets [Abstract]
Gross Carrying Amount	360,068	357,131
Accumulated Amortization	$ 195,002	190,576
Customer relationships & lists | Minimum
Identifiable intangible assets [Abstract]
Amortization Period (in years)	10 years
Customer relationships & lists | Maximum
Identifiable intangible assets [Abstract]
Amortization Period (in years)	20 years
Trademarks & trade names
Identifiable intangible assets [Abstract]
Gross Carrying Amount	$ 49,501	50,058
Accumulated Amortization	$ 33,422	33,416
Trademarks & trade names | Minimum
Identifiable intangible assets [Abstract]
Amortization Period (in years)	2 years
Trademarks & trade names | Maximum
Identifiable intangible assets [Abstract]
Amortization Period (in years)	17 years
Developed technology
Identifiable intangible assets [Abstract]
Gross Carrying Amount	$ 38,519	40,473
Accumulated Amortization	$ 15,827	16,171
Developed technology | Minimum
Identifiable intangible assets [Abstract]
Amortization Period (in years)	5 years
Developed technology | Maximum
Identifiable intangible assets [Abstract]
Amortization Period (in years)	12 years
Other
Identifiable intangible assets [Abstract]
Gross Carrying Amount	$ 28,222	25,041
Accumulated Amortization	$ 22,589	$ 19,245
Other | Minimum
Identifiable intangible assets [Abstract]
Amortization Period (in years)	2 years
Other | Maximum
Identifiable intangible assets [Abstract]
Amortization Period (in years)	18 years