FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2021 USD ($) financial_instrument	Dec. 31, 2020 USD ($)
Fair value of financial instruments [Abstract]
Number of financial instruments held for trading purposes | financial_instrument	0
Related rabbi trust assets	$ 6,076	$ 3,581
Derivative liability
Fair value of financial instruments [Abstract]
Derivative liabilities	4,944	11,658
Derivative liability | Cross-currency swap
Fair value of financial instruments [Abstract]
Derivative liabilities	1,662	6,793
Derivative liability | Interest rate swap
Fair value of financial instruments [Abstract]
Derivative liabilities	3,282	4,865
Level 1
Fair value of financial instruments [Abstract]
Related rabbi trust assets	6,076	3,581
Level 1 | Money market funds
Fair value of financial instruments [Abstract]
Cash and cash equivalents	$ 813	$ 817