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STOCK-BASED COMPENSATION PLANS - Summary of stock-based compensation expenses (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
STOCK-BASED COMPENSATION PLANS        
Total stock based compensation expense $ 654 $ 578 $ 1,621 $ 1,702
Cost of Revenue        
STOCK-BASED COMPENSATION PLANS        
Total stock based compensation expense 10 13 26 40
Sales and marketing expense        
STOCK-BASED COMPENSATION PLANS        
Total stock based compensation expense 53 16 182 130
General, and administrative        
STOCK-BASED COMPENSATION PLANS        
Total stock based compensation expense $ 591 $ 549 $ 1,413 $ 1,532