FAIR VALUE - Financial Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Liabilities
Fair value of long-term obligations	$ 900,000	$ 1,100,000
Level 3
Liabilities
Contingent consideration obligation	33,908	31,140
Fair Value, Recurring
Assets
Investment in equity securities	9,006
Foreign exchange contracts	331	322
Cross currency swap contract	511	0
Total assets at fair value	9,848	322
Liabilities
Foreign exchange contracts	221	146
Cross currency swap contract		8,309
Contingent consideration obligation	33,908	31,140
Total liabilities at fair value	34,129	39,595
Fair Value, Recurring | Level 1
Assets
Investment in equity securities	9,006
Foreign exchange contracts	0	0
Cross currency swap contract	0	0
Total assets at fair value	9,006	0
Liabilities
Foreign exchange contracts	0	0
Cross currency swap contract		0
Contingent consideration obligation	0	0
Total liabilities at fair value	0	0
Fair Value, Recurring | Level 2
Assets
Investment in equity securities	0
Foreign exchange contracts	331	322
Cross currency swap contract	511	0
Total assets at fair value	842	322
Liabilities
Foreign exchange contracts	221	146
Cross currency swap contract		8,309
Contingent consideration obligation	0	0
Total liabilities at fair value	221	8,455
Fair Value, Recurring | Level 3
Assets
Investment in equity securities	0
Foreign exchange contracts	0	0
Cross currency swap contract	0	0
Total assets at fair value	0	0
Liabilities
Foreign exchange contracts	0	0
Cross currency swap contract		0
Contingent consideration obligation	33,908	31,140
Total liabilities at fair value	$ 33,908	$ 31,140