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RETIREMENT PLANS - Amounts in Consolidated Financials (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
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Pension Plans |  |
Amounts recognized on the consolidated balance sheets |  |
Other Liabilities | $ 2,898 | $ 3,894
Other Assets | 3,435 | 3,105
Accumulated other comprehensive income, net of tax | 2,953 | 1,418
Amounts recognized in accumulated other comprehensive loss |  |
Net actuarial gain/(loss) | 1,408 | (386)
Accumulated other comprehensive income / ( loss), pre-tax | 1,408 | (386)
Accumulated other comprehensive income, net of tax | 2,953 | 1,418
Postretirement Benefits |  |
Amounts recognized on the consolidated balance sheets |  |
Accrued and current liabilities | 392 | 381
Other Liabilities | 4,915 | 4,727
Accumulated other comprehensive income, net of tax | 174 | 352
Amounts recognized in accumulated other comprehensive loss |  |
Net actuarial gain/(loss) | 174 | 352
Accumulated other comprehensive income / ( loss), pre-tax | 174 | 352
Accumulated other comprehensive income, net of tax | $ 174 | $ 352

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- Definition Amount, before tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 + Details
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