v3.19.1
COMMITMENTS AND CONTINGENCIES (Schedule of Rental and Lease Expense) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]      
Rental and lease expenses $ 3,850 $ 5,693 $ 6,591