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SALES SERVICE REVENUE, NET AND ACCOUNTS RECEIVABLE (Schedule of Customer Revenue and Accounts Receivable Concentrations) (Details) - Customer Concentration Risk [Member]
12 Months Ended
Dec. 31, 2019
Sales Revenue, Net [Member] | Customer A [Member]  
Concentration Risk [Line Items]  
Concentration risk, percentage 19.00%
Sales Revenue, Net [Member] | Customer B [Member]  
Concentration Risk [Line Items]  
Concentration risk, percentage 11.00%
Accounts Receivable [Member] | Customer B [Member]  
Concentration Risk [Line Items]  
Concentration risk, percentage 17.00%
Accounts Receivable [Member] | Customer C [Member]  
Concentration Risk [Line Items]  
Concentration risk, percentage 12.00%