Pension and Other Benefits (Details) - Schedule of Changes in Fair Value of Plan Assets - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
PENSION AND OTHER BENEFITS (Details) - Schedule of Changes in Fair Value of Plan Assets [Line Items]
Fair Value of Pension Plan Assets	$ 12,609	$ 12,002
Fair Value, Inputs, Level 1 [Member]
PENSION AND OTHER BENEFITS (Details) - Schedule of Changes in Fair Value of Plan Assets [Line Items]
Fair Value of Pension Plan Assets	12,609	12,002
Fair Value, Inputs, Level 2 [Member]
PENSION AND OTHER BENEFITS (Details) - Schedule of Changes in Fair Value of Plan Assets [Line Items]
Fair Value of Pension Plan Assets
Fair Value, Inputs, Level 3 [Member]
PENSION AND OTHER BENEFITS (Details) - Schedule of Changes in Fair Value of Plan Assets [Line Items]
Fair Value of Pension Plan Assets
Cash [Member]
PENSION AND OTHER BENEFITS (Details) - Schedule of Changes in Fair Value of Plan Assets [Line Items]
Fair Value of Pension Plan Assets	175	19
Cash [Member] | Fair Value, Inputs, Level 1 [Member]
PENSION AND OTHER BENEFITS (Details) - Schedule of Changes in Fair Value of Plan Assets [Line Items]
Fair Value of Pension Plan Assets	175	19
Cash [Member] | Fair Value, Inputs, Level 2 [Member]
PENSION AND OTHER BENEFITS (Details) - Schedule of Changes in Fair Value of Plan Assets [Line Items]
Fair Value of Pension Plan Assets
Cash [Member] | Fair Value, Inputs, Level 3 [Member]
PENSION AND OTHER BENEFITS (Details) - Schedule of Changes in Fair Value of Plan Assets [Line Items]
Fair Value of Pension Plan Assets
Us Companies [Member]
PENSION AND OTHER BENEFITS (Details) - Schedule of Changes in Fair Value of Plan Assets [Line Items]
Fair Value of Pension Plan Assets	5,175	5,221
Us Companies [Member] | Fair Value, Inputs, Level 1 [Member]
PENSION AND OTHER BENEFITS (Details) - Schedule of Changes in Fair Value of Plan Assets [Line Items]
Fair Value of Pension Plan Assets	5,175	5,221
Us Companies [Member] | Fair Value, Inputs, Level 2 [Member]
PENSION AND OTHER BENEFITS (Details) - Schedule of Changes in Fair Value of Plan Assets [Line Items]
Fair Value of Pension Plan Assets
Us Companies [Member] | Fair Value, Inputs, Level 3 [Member]
PENSION AND OTHER BENEFITS (Details) - Schedule of Changes in Fair Value of Plan Assets [Line Items]
Fair Value of Pension Plan Assets
International Companies [Member]
PENSION AND OTHER BENEFITS (Details) - Schedule of Changes in Fair Value of Plan Assets [Line Items]
Fair Value of Pension Plan Assets	1,056	1,005
International Companies [Member] | Fair Value, Inputs, Level 1 [Member]
PENSION AND OTHER BENEFITS (Details) - Schedule of Changes in Fair Value of Plan Assets [Line Items]
Fair Value of Pension Plan Assets	1,056	1,005
International Companies [Member] | Fair Value, Inputs, Level 2 [Member]
PENSION AND OTHER BENEFITS (Details) - Schedule of Changes in Fair Value of Plan Assets [Line Items]
Fair Value of Pension Plan Assets
International Companies [Member] | Fair Value, Inputs, Level 3 [Member]
PENSION AND OTHER BENEFITS (Details) - Schedule of Changes in Fair Value of Plan Assets [Line Items]
Fair Value of Pension Plan Assets
Debt And Fixed Income Securities [Member]
PENSION AND OTHER BENEFITS (Details) - Schedule of Changes in Fair Value of Plan Assets [Line Items]
Fair Value of Pension Plan Assets	6,139	5,689
Debt And Fixed Income Securities [Member] | Fair Value, Inputs, Level 1 [Member]
PENSION AND OTHER BENEFITS (Details) - Schedule of Changes in Fair Value of Plan Assets [Line Items]
Fair Value of Pension Plan Assets	6,139	5,689
Debt And Fixed Income Securities [Member] | Fair Value, Inputs, Level 2 [Member]
PENSION AND OTHER BENEFITS (Details) - Schedule of Changes in Fair Value of Plan Assets [Line Items]
Fair Value of Pension Plan Assets
Debt And Fixed Income Securities [Member] | Fair Value, Inputs, Level 3 [Member]
PENSION AND OTHER BENEFITS (Details) - Schedule of Changes in Fair Value of Plan Assets [Line Items]
Fair Value of Pension Plan Assets
Real Estate Fund [Member]
PENSION AND OTHER BENEFITS (Details) - Schedule of Changes in Fair Value of Plan Assets [Line Items]
Fair Value of Pension Plan Assets	64	68
Real Estate Fund [Member] | Fair Value, Inputs, Level 1 [Member]
PENSION AND OTHER BENEFITS (Details) - Schedule of Changes in Fair Value of Plan Assets [Line Items]
Fair Value of Pension Plan Assets	64	68
Real Estate Fund [Member] | Fair Value, Inputs, Level 2 [Member]
PENSION AND OTHER BENEFITS (Details) - Schedule of Changes in Fair Value of Plan Assets [Line Items]
Fair Value of Pension Plan Assets
Real Estate Fund [Member] | Fair Value, Inputs, Level 3 [Member]
PENSION AND OTHER BENEFITS (Details) - Schedule of Changes in Fair Value of Plan Assets [Line Items]
Fair Value of Pension Plan Assets