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STOCK-BASED COMPENSATION PLANS (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Allocated Share-based Compensation Expense $ 820 $ 370
Costs of revenue - devices and supplies    
Allocated Share-based Compensation Expense 21 33
Sales and marketing expense    
Allocated Share-based Compensation Expense 205 127
General, and administrative    
Allocated Share-based Compensation Expense $ 594 $ 210