v3.19.1
INCOME TAXES (Schedule of Uncertain Tax Positions) (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2019
Dec. 31, 2018
Income Tax Disclosure [Abstract]    
Balance at January 1, $ 8,499 $ 579
Increases related to current year tax positions 1,033 8,499
Decreases related to prior year tax positions (579)
Closing balance $ 9,532 $ 8,499