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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Cash Flow Hedge) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Dec. 31, 2017 | Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |  |
Net after-tax loss included in accumulated other comprehensive earnings | $ (279) | $ 1,166 | $ 593 | $ (1,046) |  |
Derivatives in Cash Flow Hedging Relationships |  |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |  |
Amount of Gain or (Loss) Recognized in OCI on Derivative (Effective Portion) | 8,077 | $ 2,063 | 12,142 | $ 15,068 |  |
Cross Currency Swap Contract | Derivatives in Cash Flow Hedging Relationships |  |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |  |
Amount hedged |  |  |  |  | $ 280,000 |
Net after-tax loss included in accumulated other comprehensive earnings |  |  | 2,200 |  |  |
Fair value of derivative asset | 6,700 |  | 6,700 |  |  |
Cross Currency Swap Contract: Interest Component | Derivatives in Cash Flow Hedging Relationships |  |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |  |
Amount expected to be recognized in earnings in next twelve months related to cross currency swap contract | $ 4,200 |  | $ 4,200 |  |  |
Notes payable to banks |  |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |  |
Proceeds from debt |  |  |  |  | $ 280,000 |
Interest rate on notes (as a percent) | 1.36% |  | 1.36% |  | 1.36% | 1.36%

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The estimated net amount of unrealized gains or losses on interest rate cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=112277219&loc=d3e80748-113994 + Details
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