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Interest Rate Swap Derivatives - Designated cash flow hedges (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Gain or (loss) on cash flow hedging relationships in Subtopic 815-20
Amount of gain or (loss) reclassified from accumulated other comprehensive income into income	$ 829
Cash Flow Hedge
Gain or (loss) on cash flow hedging relationships in Subtopic 815-20
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	829
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income - Included Component	829
Interest Expenses
Gain or (loss) on cash flow hedging relationships in Subtopic 815-20
Amount of gain or (loss) reclassified from accumulated other comprehensive income into income	1,165	$ 560
Interest Expenses | Cash Flow Hedge
Gain or (loss) on cash flow hedging relationships in Subtopic 815-20
Amount of gain or (loss) reclassified from accumulated other comprehensive income into income	1,165	560
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income - Included Component	$ 1,165	$ 560

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- Definition

It represents the amount of Derivative Instruments Gain Loss Reclassification From Accumulated Oci To Including Income Statement Component.

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- Definition

The estimated value of gains (losses), net anticipated to be transferred in the future from accumulated other comprehensive income into earnings.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=112277219&loc=d3e80845-113994

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- Definition

The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4D
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-Section 50
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