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Fair Value of Financial Instruments - Quantitative Information About Non-recurring Level 3 Fair Value of Financial Instruments (Details) $ in Thousands	Sep. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Dec. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Dec. 31, 2018 USD ($)
Other Real Estate	$ 0	$ 208	$ 239	$ 239	$ 239	$ 0
Fair Value, Measurements, Nonrecurring [Member]
Impaired loans	$ 4,167		1,081
Valuation, Market Approach [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Loss Severity [Member]
Impaired loans			$ 239
Valuation, Market Approach [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Loss Severity [Member] | Minimum [Member]
Impaired loans, measurement input	(100.0)
Other Real Estate, Measurement Input			0.5
Valuation, Market Approach [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Loss Severity [Member] | Maximum [Member]
Impaired loans, measurement input	15.0
Other Real Estate, Measurement Input			12.5
Valuation, Market Approach [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Loss Severity [Member] | Weighted Average [Member]
Impaired loans, measurement input			6.5
Valuation, Market Approach [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Comparability Adjustment [Member]
Impaired loans	$ 2,112
Valuation, Market Approach [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Comparability Adjustment [Member] | Weighted Average [Member]
Impaired loans, measurement input	(74.0)
Valuation Technique, Discounted Cash Flow [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Discount Rate [Member]
Impaired loans	$ 2,055		$ 809
Impaired loans, measurement input			6.4
Valuation Technique, Discounted Cash Flow [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Discount Rate [Member] | Minimum [Member]
Impaired loans, measurement input	4.3
Valuation Technique, Discounted Cash Flow [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Discount Rate [Member] | Maximum [Member]
Impaired loans, measurement input	6.4
Valuation Technique, Discounted Cash Flow [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Discount Rate [Member] | Weighted Average [Member]
Impaired loans, measurement input	5.1		6.4
Valuation Technique, Discounted Cash Flow [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Loss Severity [Member]
Impaired loans, measurement input			0.200
Valuation Technique, Discounted Cash Flow [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Loss Severity [Member] | Minimum [Member]
Impaired loans, measurement input	0.200
Valuation Technique, Discounted Cash Flow [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Loss Severity [Member] | Maximum [Member]
Impaired loans, measurement input	35.0
Valuation Technique, Discounted Cash Flow [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Loss Severity [Member] | Weighted Average [Member]
Impaired loans, measurement input	29.0		0.200
Blended Income and Sales Approach [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Cap Rate [Member]
Impaired loans, measurement input			9.5
Blended Income and Sales Approach [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Cap Rate [Member] | Weighted Average [Member]
Impaired loans, measurement input			9.5
Blended Income and Sales Approach [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Loss Severity [Member]
Impaired loans, measurement input			15.0
Blended Income and Sales Approach [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Loss Severity [Member] | Weighted Average [Member]
Impaired loans, measurement input			15.0
Blended Income and Sales Approach [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Comparability Adjustment [Member]
Impaired loans			$ 272
Blended Income and Sales Approach [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Comparability Adjustment [Member] | Minimum [Member]
Impaired loans, measurement input			(10.0)
Blended Income and Sales Approach [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Comparability Adjustment [Member] | Maximum [Member]
Impaired loans, measurement input			15.0
Blended Income and Sales Approach [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Comparability Adjustment [Member] | Weighted Average [Member]
Impaired loans, measurement input			2.5

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Carrying amount of other real estate not separately disclosed, including, but not limited to, real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned. This does not include real estate assets taken in settlement of troubled loans through surrender or foreclosure.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.10(4))
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Value of input used to measure real estate owned by financial institution by financial institution which is not directly related to its business.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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