SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Allowance for credit losses (Details) - Trade Accounts Receivable - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 3,743	$ 5,246	$ 771
Provision for credit loss expense	5,887	1,088	5,716
Write-offs	(4,380)	(3,113)	(1,730)
Recoveries	379	522	489
Total ending allowance balance	$ 5,629	$ 3,743	$ 5,246