LEASES - Components of lease expenses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
LEASES
Total operating lease expense	$ 878	$ 889	$ 2,655	$ 3,131
Total amortization of leased assets	54	37	149	96
Interest on lease liabilities	8	5	17	19
Total finance lease expense	62	42	166	115
Cost of revenue
LEASES
Total operating lease expense	94	89	284	275
General, and administrative
LEASES
Total operating lease expense	563	571	1,715	1,978
Sales and marketing expense
LEASES
Total operating lease expense	$ 221	$ 229	$ 656	$ 878