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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Income tax expense (benefit) related to items in other comprehensive loss | $ 2,333 | $ (800) | $ (375)
Pension Plan |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Income tax expense (benefit) related to items in other comprehensive loss | 0 |  |
Cash Flow Hedging |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Income tax expense (benefit) related to items in other comprehensive loss | $ 2,300 |  |

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- Definition Amount of tax expense (benefit) allocated to other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e640-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 20 -Section 45 -Paragraph 11 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=79507043&loc=d3e39076-109324 + Details
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