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Other Derivatives - Hedging instruments on statements of operations (Details) - Nonoperating Income (Expense) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Income (Loss) Recognized in Income on Derivative	$ 1,852	$ 5,962	$ 5,573	$ 5,612
Interest Rate Products
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Income (Loss) Recognized in Income on Derivative	277	(40)	261	(326)
Mortgage Banking
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Income (Loss) Recognized in Income on Derivative	1,575	6,015	5,268	6,015
Other Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Income (Loss) Recognized in Income on Derivative	$ 0	$ (13)	$ 44	$ (77)

X

- 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=125515794&loc=SL5624171-113959

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+ References

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