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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Schedule of concentration of credit risk, percentage of total revenues) (Details) - Revenue [Member]
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Customer A [Member]    
Summary of concentration of credit risk, customer as a percentage of total revenues    
Concentration risk percentage 40.00% 44.00%
Customer B [Member]    
Summary of concentration of credit risk, customer as a percentage of total revenues    
Concentration risk percentage 18.00% [1]
Customer C [Member]    
Summary of concentration of credit risk, customer as a percentage of total revenues    
Concentration risk percentage 18.00% 20.00%
Customer D [Member]    
Summary of concentration of credit risk, customer as a percentage of total revenues    
Concentration risk percentage [1] 11.00%
[1] Amounts are less than 10%