Investment Securities - Amortized Cost and Fair Value of Securities Available-for-sale (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Marketable Securities [Line Items]
Amortized Cost	$ 126,703	$ 135,087
Gross unrealized gains	110	103
Gross unrealized losses	(22,727)	(19,202)
Securities available-for-sale	104,086	115,988
U.S. government agencies
Marketable Securities [Line Items]
Amortized Cost	11,281	14,317
Gross unrealized gains	110	81
Gross unrealized losses	(182)	(225)
Securities available-for-sale	11,209	14,173
Mortgage-backed securities
Marketable Securities [Line Items]
Amortized Cost	68,715	73,111
Gross unrealized gains	0	1
Gross unrealized losses	(14,252)	(11,841)
Securities available-for-sale	54,463	61,271
Obligations of states and political subdivisions
Marketable Securities [Line Items]
Amortized Cost	44,325	45,223
Gross unrealized gains	0	21
Gross unrealized losses	(7,974)	(6,818)
Securities available-for-sale	36,351	38,426
Collateralized mortgage obligations
Marketable Securities [Line Items]
Amortized Cost	382	436
Gross unrealized gains	0	0
Gross unrealized losses	(45)	(41)
Securities available-for-sale	337	395
Corporate bonds
Marketable Securities [Line Items]
Amortized Cost	2,000	2,000
Gross unrealized gains	0	0
Gross unrealized losses	(274)	(277)
Securities available-for-sale	$ 1,726	$ 1,723

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on 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
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-2

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on 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
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-2

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Amortized cost 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
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(1))
-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
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-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-2

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
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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
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (aa)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481830/320-10-45-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
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-Paragraph 1
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-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479130/326-30-45-1

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