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REVENUE FROM CONTRACTS WITH CUSTOMERS (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended
Jun. 30, 2018
Apr. 01, 2018
Revenue from Contract with Customer [Abstract]    
Contract with liability $ 466,429 $ 566,141
Contract with liability recognized 240,485  
Contract asset 66,668 $ 69,522
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-07-01    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]    
Remaining obligation $ 466,429  
Remaining obligation period 1 year