Investment Securities Available-for-sale securities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Available-for-sale Securities
Amortized Cost	$ 86,837	$ 86,145
Gross Unrealized Gains	2,845	1,514
Gross Unrealized Losses	(235)	(266)
Fair Value	89,447	87,393
US Government-sponsored enterprises [Member]
Available-for-sale Securities
Amortized Cost	5,050	6,349
Gross Unrealized Gains	49	19
Gross Unrealized Losses	(42)	(76)
Fair Value	5,057	6,292
Agency mortgage-backed [Member]
Available-for-sale Securities
Amortized Cost	46,212	45,503
Gross Unrealized Gains	1,881	602
Gross Unrealized Losses	(14)	(81)
Fair Value	48,079	46,024
State and political subdivisions [Member]
Available-for-sale Securities
Amortized Cost	27,767	26,489
Gross Unrealized Gains	611	515
Gross Unrealized Losses	(39)	(39)
Fair Value	28,339	26,965
Corporate [Member]
Available-for-sale Securities
Amortized Cost	7,808	7,804
Gross Unrealized Gains	304	378
Gross Unrealized Losses	(140)	(70)
Fair Value	$ 7,972	$ 8,112

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27161-111563

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118942338&loc=SL82898722-210454

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Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
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-URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27161-111563

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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118942338&loc=SL82898722-210454

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118954083&loc=d3e26610-111562

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