Investment Securities - Amortized Cost and Fair Value - Available-for-sale Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Securities Available-for-Sale
Amortized cost	$ 163,780	$ 185,690
Gross unrealized (losses)	(16,027)	(15,697)
Available-for-sale, fair value	147,753	169,993
Financial Asset, Past Due [Member]
Securities Available-for-Sale
Available-for-sale	0	0
U.S. Treasuries
Securities Available-for-Sale
Amortized cost	32,860	44,793
Gross unrealized (losses)	(1,479)	(1,816)
Available-for-sale, fair value	31,381	42,977
U.S. government and federal agencies
Securities Available-for-Sale
Amortized cost	13,909	13,850
Gross unrealized (losses)	(555)	(575)
Available-for-sale, fair value	13,354	13,275
Corporate bonds
Securities Available-for-Sale
Amortized cost	3,000	3,000
Gross unrealized (losses)	(517)	(477)
Available-for-sale, fair value	2,483	2,523
U.S. agency collateralized mortgage obligations
Securities Available-for-Sale
Amortized cost	39,420	40,806
Gross unrealized (losses)	(6,712)	(6,496)
Available-for-sale, fair value	32,708	34,310
Tax-exempt municipal
Securities Available-for-Sale
Amortized cost	1,379	1,380
Gross unrealized (losses)	(200)	(149)
Available-for-sale, fair value	1,179	1,231
Taxable municipal
Securities Available-for-Sale
Amortized cost	606	606
Gross unrealized (losses)	(14)	(19)
Available-for-sale, fair value	592	587
U.S. agency mortgage-backed
Securities Available-for-Sale
Amortized cost	72,606	81,255
Gross unrealized (losses)	(6,550)	(6,165)
Available-for-sale, fair value	$ 66,056	$ 75,090

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).

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 excluding accrued interest, before allowance for credit loss, 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 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479130/326-30-45-1

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Amount excluding accrued interest, 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/2009/role/commonPracticeRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479130/326-30-45-1

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