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Investment Securities - Amortized Cost and Fair Value - Available-for-sale Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Securities Available-for-Sale
Amortized cost, available for sale	$ 156,426	$ 185,690
Gross unrealized (losses)	(11,777)	(15,697)
Available-for-sale, fair value	144,649	169,993
Past Due
Securities Available-for-Sale
Available-for-sale, fair value	0	0
U.S. Treasuries
Securities Available-for-Sale
Amortized cost, available for sale	30,892	44,793
Gross unrealized (losses)	(888)	(1,816)
Available-for-sale, fair value	30,004	42,977
U.S. government and federal agencies
Securities Available-for-Sale
Amortized cost, available for sale	13,939	13,850
Gross unrealized (losses)	(318)	(575)
Available-for-sale, fair value	13,621	13,275
Corporate bonds
Securities Available-for-Sale
Amortized cost, available for sale	3,000	3,000
Gross unrealized (losses)	(345)	(477)
Available-for-sale, fair value	2,655	2,523
U.S. agency collateralized mortgage obligations
Securities Available-for-Sale
Amortized cost, available for sale	38,508	40,806
Gross unrealized (losses)	(5,602)	(6,496)
Available-for-sale, fair value	32,906	34,310
Tax-exempt municipal
Securities Available-for-Sale
Amortized cost, available for sale	1,379	1,380
Gross unrealized (losses)	(158)	(149)
Available-for-sale, fair value	1,221	1,231
Taxable municipal
Securities Available-for-Sale
Amortized cost, available for sale	270	606
Gross unrealized (losses)	(9)	(19)
Available-for-sale, fair value	261	587
U.S. agency mortgage-backed
Securities Available-for-Sale
Amortized cost, available for sale	68,438	81,255
Gross unrealized (losses)	(4,457)	(6,165)
Available-for-sale, fair value	$ 63,981	$ 75,090

X

- Definition

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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- Definition

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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- Definition

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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