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REVENUE FROM CONTRACTS WITH CUSTOMERS - Receivables, Contract Assets and Liabilities (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Trade accounts receivable and contract assets, net:    
Trade account receivable, excluding unbilled receivables $ 867 $ 644
Contract asset for unbilled receivables 589 1,008
Contract acquisition costs 200 0
Total contract assets 1,656 1,652
Contract liabilities:    
Deferred revenue, current 2,910 2,669
Deferred revenue, non-current 57 79
Customer deposit 45 45
Total contract liabilities $ 3,012 $ 2,793