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Significant Accounting Policies Update (Details) - USD ($)
$ in Thousands
Jun. 30, 2018
Dec. 31, 2017
Accounting Changes and Error Corrections [Abstract]    
Contract with Customer, Asset, Net, Current $ 673 $ 325
Contract with Customer, Liability, Current 4,538 2,252
CONTRACT LIABILITIES 9,202 6,694
CONTRACT LIABILITIES $ 4,664 $ 4,442