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Fair Value - Assets and Liabilities Measured at Fair Value on Non-Recurring Basis (Details) - Fair Value, Measurements, Nonrecurring - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Commercial, industrial and agricultural
Impaired loans:
Assets, fair value disclosure	$ 2,519	$ 2,910
Commercial, industrial and agricultural | Quoted Prices in Active Markets  for Identical Assets
Impaired loans:
Assets, fair value disclosure	0	0
Commercial, industrial and agricultural | Significant Other Observable Inputs
Impaired loans:
Assets, fair value disclosure	0	0
Commercial, industrial and agricultural | Significant Unobservable Inputs
Impaired loans:
Assets, fair value disclosure	2,519	2,910
Commercial mortgages
Impaired loans:
Assets, fair value disclosure	11,140	1,147
Commercial mortgages | Quoted Prices in Active Markets  for Identical Assets
Impaired loans:
Assets, fair value disclosure	0	0
Commercial mortgages | Significant Other Observable Inputs
Impaired loans:
Assets, fair value disclosure	0	0
Commercial mortgages | Significant Unobservable Inputs
Impaired loans:
Assets, fair value disclosure	$ 11,140	$ 1,147

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- Definition

Impaired loans.

+ References

No definition available.

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- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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