Annual report pursuant to Section 13 and 15(d)

POST-RETIREMENT OBLIGATIONS (Details)

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POST-RETIREMENT OBLIGATIONS (Details) - Postretirement Benefits - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Jun. 30, 2018
Mr. Hatem El Khalidi      
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]      
Deferred compensation arrangement with individual, amount of post-retirement obligation outstanding   $ 1,000 $ (1,000)
Chief Executive Officer      
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]      
Deferred compensation arrangement with individual, amount of post-retirement obligation outstanding $ 377 249  
Defined benefit plan, benefits paid $ 18 $ 16