DERIVATIVES - Fair Values of Derivative Financial Instruments Included in Consolidated Balance Sheets (Details) - Fair Value, Observable inputs, Level 2 - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Derivatives designated as hedging instruments \| Interest rate swaps \| Accrued expenses
Derivatives, Fair Value [Line Items]
Fair value of derivative liability	$ 507	$ 504
Derivatives designated as hedging instruments \| Interest rate swaps \| Other Long-Term Liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liability	508	1,034
Derivatives designated as hedging instruments \| Foreign exchange contracts \| Accrued expenses
Derivatives, Fair Value [Line Items]
Fair value of derivative liability	290	0
Derivatives not designated as hedging instruments \| Interest rate swaps \| Other Long-Term Liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liability	$ 1,198	$ 1,742

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4D
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=121570589&loc=SL51823488-111719

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (a),(c)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624163-113959

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226000-175313

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Balance Type:	credit
Period Type:	instant