RECEIVABLES - Summary of Activity in Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	$ 8,912	$ 9,918
Provision for expected credit losses	66	2,193
Write-offs	(830)	(3,143)
Foreign exchange effects	22	(56)
Balance at end of period	$ 8,170	$ 8,912