ACCOUNTS RECEIVABLE - Schedule of allowance for doubtful accounts (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	$ 3,103	$ 3,526	$ 3,658	$ 3,599
Add: Additions to reserve	871	353	1,276	755
Less: Write-offs	(1,209)	(320)	(2,169)	(821)
Less: Recovery	8	6	8	32
Balance, end of period	$ 2,773	$ 3,565	$ 2,773	$ 3,565