ACCOUNTS RECEIVABLE - Allowance for doubtful accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
ACCOUNTS RECEIVABLE
Balance at beginning of period	$ 665	$ 500
Provision for uncollectible accounts, net of recoveries	1,393	447
Uncollectible accounts written off	(418)	(282)
Balance at end of period	$ 1,640	$ 665