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SALES SERVICE REVENUE, NET AND ACCOUNTS RECEIVABLE (Narrative) (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2023
USD ($)
Jun. 30, 2022
USD ($)
Jun. 30, 2023
USD ($)
segment
Jun. 30, 2022
USD ($)
Dec. 31, 2022
USD ($)
SALES SERVICE REVENUE, NET AND ACCOUNTS RECEIVABLE [Abstract]          
Number of segments | segment     1    
Revenue from sales-type leases $ 0 $ 0 $ 0 $ 0  
Deferred revenue $ 17   $ 17   $ 119