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Other Derivatives - Designated cash flow hedges (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020
Designated Cash Flow Hedge |  |
Reclassification of Cash Flow Hedge Gain (Loss) [Abstract] |  |
Amount of gain or (loss) reclassified from accumulated other comprehensive income into income | $ (385) | $ 28
Interest Expenses |  |
Reclassification of Cash Flow Hedge Gain (Loss) [Abstract] |  |
Total amounts of income and expense line items presented in the consolidated statement of income in which the effects of fair value or cash flow hedges are recorded | (384) | 28
Interest Expenses | Designated Cash Flow Hedge |  |
Reclassification of Cash Flow Hedge Gain (Loss) [Abstract] |  |
Amount of gain or (loss) reclassified from accumulated other comprehensive income into income | (384) | 28
Amount of gain or (loss) reclassified from accumulated other comprehensive income into income as a result that a forecasted transaction is no longer probable of occurring | 0 | 0
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income - Included Component | (384) | 28
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income - Excluded Component | $ 0 | $ 0

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- Definition Amount of gain (loss) from excluded component of derivative hedge, recognized in earnings. Excludes recognition under systematic and rational method. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 20 -Section 45 -Paragraph 1A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121577181&loc=SL110061172-113977 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624171-113959 + Details
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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=121590274&loc=SL5618551-113959 + Details
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