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Pension and Other Benefits (Details) - Schedule of Changes in Fair Value of Plan Assets - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
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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 |  |

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