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Fair Value of Financial Instruments - Quantitative Information About Non-recurring Level 3 Fair Value of Financial Instruments (Details) $ in Thousands	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Other Real Estate	$ 208	$ 239	$ 0	$ 0
Fair Value, Measurements, Nonrecurring [Member]
Impaired loans	$ 1,259	1,081
Valuation, Market Approach [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Loss Severity [Member]
Impaired loans		$ 239
Impaired loans, measurerment input	47.8
Other Real Estate, Measurement Input	0.0
Valuation, Market Approach [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Loss Severity [Member] | Minimum [Member]
Impaired loans, measurerment input		0.5
Valuation, Market Approach [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Loss Severity [Member] | Maximum [Member]
Impaired loans, measurerment input		12.5
Valuation, Market Approach [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Loss Severity [Member] | Weighted Average [Member]
Impaired loans, measurerment input	47.8	6.5
Valuation, Market Approach [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Comparability Adjustment [Member]
Impaired loans	$ 169
Impaired loans, measurerment input	0.0
Other Real Estate	$ 208
Other Real Estate, Measurement Input	6.5
Valuation, Market Approach [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Comparability Adjustment [Member] | Minimum [Member]
Other Real Estate, Measurement Input	0.5
Valuation, Market Approach [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Comparability Adjustment [Member] | Maximum [Member]
Other Real Estate, Measurement Input	12.5
Valuation, Market Approach [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Comparability Adjustment [Member] | Weighted Average [Member]
Impaired loans, measurerment input	0.0
Valuation Technique, Discounted Cash Flow [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Discount Rate [Member]
Impaired loans	$ 818	$ 809
Impaired loans, measurerment input	6.4	6.4
Valuation Technique, Discounted Cash Flow [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Discount Rate [Member] | Weighted Average [Member]
Impaired loans, measurerment input	6.4	6.4
Valuation Technique, Discounted Cash Flow [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Loss Severity [Member]
Impaired loans, measurerment input	0.200	0.200
Valuation Technique, Discounted Cash Flow [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Loss Severity [Member] | Weighted Average [Member]
Impaired loans, measurerment input	0.200	0.200
Blended Income and Sales Approach [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Cap Rate [Member]
Impaired loans, measurerment input	9.5	9.5
Blended Income and Sales Approach [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Cap Rate [Member] | Weighted Average [Member]
Impaired loans, measurerment input	9.5	9.5
Blended Income and Sales Approach [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Loss Severity [Member]
Impaired loans, measurerment input	15.0	15.0
Blended Income and Sales Approach [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Loss Severity [Member] | Weighted Average [Member]
Impaired loans, measurerment input	15.0	15.0
Blended Income and Sales Approach [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Comparability Adjustment [Member]
Impaired loans		$ 272
Other Real Estate	$ 272
Blended Income and Sales Approach [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Comparability Adjustment [Member] | Minimum [Member]
Impaired loans, measurerment input	(10.0)
Other Real Estate, Measurement Input		(0.100)
Blended Income and Sales Approach [Member] | Fair Value, Measurements, Nonrecurring [Member] | Measurement Input, Comparability Adjustment [Member] | Maximum [Member]
Impaired loans, measurerment input	15.0
Other Real Estate, 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, measurerment input	2.5	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))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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- Definition

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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