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REVENUES (Schedule of Remaining Performance Obligations) (Details)
$ in Thousands
Jun. 30, 2019
USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Unsatisfied performance obligations $ 8,770
Remainder of 2019 [Member]  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Unsatisfied performance obligations 16,114
2020 [Member]  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Unsatisfied performance obligations 10,330
2021 and thereafter [Member]  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Unsatisfied performance obligations $ 6,265