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DERIVATIVES - Derivative Financial Instruments, Average Remaining Maturity and the Weighted-Average Interest Rates being Paid and Received (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2019 | Dec. 31, 2018
Derivative [Line Items] |  |
Notional Value | $ 3,170,900 | $ 2,719,980
Interest Rate Swap |  |
Derivative [Line Items] |  |
Notional Value | $ 3,170,900 |
Average Maturity (years) | 6 years 2 months 12 days |
Fair Value | $ (20) |
Weighted-Average Rate Receive | 4.68% |
Weighted-Average Rate Pay | 4.68% |
Interest Rate Swap | Derivative Financial Instruments Receive Fixed Pay Variable |  |
Derivative [Line Items] |  |
Notional Value | $ 1,585,450 |
Average Maturity (years) | 6 years 2 months 12 days |
Fair Value | $ 64,362 |
Weighted-Average Rate Receive | 4.69% |
Weighted-Average Rate Pay | 4.66% |
Interest Rate Swap | Derivative Financial Instruments Receive Variable Pay Fixed |  |
Derivative [Line Items] |  |
Notional Value | $ 1,585,450 |
Average Maturity (years) | 6 years 2 months 12 days |
Fair Value | $ (64,382) |
Weighted-Average Rate Receive | 4.66% |
Weighted-Average Rate Pay | 4.69% |

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=117331979&loc=d3e41228-113958 + Details
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- Definition Average fixed interest rate related to the group of interest rate derivatives. + References No definition available. + Details
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- Definition Average remaining period until maturity of the derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Average variable interest rate related to the group of interest rate derivatives. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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