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Derivative Instruments - Non-hedge Derivatives (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020
Derivative [Line Items] |  |  |  |  |
Notional Amount | $ 1,500,000 |  | $ 1,500,000 |  |
Not Designated as Hedging Instrument |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Notional Amount | 3,155,470 |  | 3,155,470 |  | $ 3,131,832
Estimated Fair Value | (816) |  | (816) |  | (1,317)
Derivative, Gain (Loss) on Derivative, Net | 51 | $ (794) | 501 | $ (1,137) |
Not Designated as Hedging Instrument | Assets |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Notional Amount | 1,577,735 |  | 1,577,735 |  | 1,565,916
Estimated Fair Value | 66,074 |  | 66,074 |  | 101,602
Not Designated as Hedging Instrument | Liabilities |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Notional Amount | 1,577,735 |  | 1,577,735 |  | 1,565,916
Estimated Fair Value | $ (66,890) |  | $ (66,890) |  | $ (102,919)

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959 + 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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- Definition Nominal or face amount used to calculate payment on derivative. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959 + Details
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- Definition Fair value as of the balance sheet date of interest rate derivative assets, net of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized on the balance sheet. + References No definition available. + Details
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