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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 2) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items] |  |  |
Amortization of defined benefit pension items Prior service cost | $ (262) | $ (112) | [1]
Amortization of defined benefit pension items Actuarial losses | 1,789 | 1,874 | [1]
Amortization of defined benefit pension items Total before tax | 1,527 | 1,762 |
Amortization of defined benefit pension items Tax benefit | (596) | (687) |
Amortization of defined benefit pension items Net of tax | $ 931 | $ 1,075 |
[1] | These amounts were included in the computation of net periodic pension cost. See Note 11 for additional details.

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- Definition Amount before tax, after reclassification adjustments, of actuarial gain (loss) that has not been recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669646-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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