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Available-for-sale securities - Schedule of By Maturity Date (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Amortized Cost
Due Within 5 years	$ 3,000	$ 5,153
Due After 5 years through 10 years	22,168	24,719
Due After 10 years	75,079	80,184
Total	100,247	110,056
Fair Value
Due Within 5 years	2,610	4,614
Due After 5 years through 10 years	17,720	19,186
Due After 10 years	59,662	65,387
Total	79,992	89,187
Available-for-sale securities with stated maturity dates
Amortized Cost
Due Within 5 years	3,000	5,153
Due After 5 years through 10 years	16,996	19,497
Due After 10 years	4,562	4,906
Total	24,558	29,556
Fair Value
Due Within 5 years	2,610	4,614
Due After 5 years through 10 years	13,586	14,949
Due After 10 years	3,573	3,953
Total	19,769	23,516
Corporate bonds
Amortized Cost
Due Within 5 years	0	2,000
Due After 5 years through 10 years	15,996	15,995
Due After 10 years	0	0
Total	15,996	17,995
Fair Value
Due Within 5 years	0	1,947
Due After 5 years through 10 years	12,735	11,819
Due After 10 years	0	0
Total	12,735	13,766
Subordinated notes
Amortized Cost
Due Within 5 years	3,000	3,000
Due After 5 years through 10 years	1,000	2,000
Due After 10 years	0	0
Total	4,000	5,000
Fair Value
Due Within 5 years	2,610	2,527
Due After 5 years through 10 years	851	1,700
Due After 10 years	0	0
Total	3,461	4,227
SBA loan pools
Amortized Cost
Due Within 5 years	0	0
Due After 5 years through 10 years	0	1,096
Due After 10 years	4,562	4,906
Total	4,562	6,002
Fair Value
Due Within 5 years	0	0
Due After 5 years through 10 years	0	1,084
Due After 10 years	3,573	3,953
Total	3,573	5,037
Municipal bonds
Amortized Cost
Due Within 5 years		153
Due After 5 years through 10 years		406
Due After 10 years		0
Total		559
Fair Value
Due Within 5 years		140
Due After 5 years through 10 years		346
Due After 10 years		0
Total		486
U. S. Government agency and mortgage-backed securities
Amortized Cost
Due Within 5 years	0	0
Due After 5 years through 10 years	5,172	5,222
Due After 10 years	70,517	75,278
Total	75,689	80,500
Fair Value
Due Within 5 years	0	0
Due After 5 years through 10 years	4,134	4,237
Due After 10 years	56,089	61,434
Total	$ 60,223	$ 65,671

X

- Definition

Amount after adjustments of available-for-sale debt securities at cost, maturing in the first fiscal year through the fifth fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings less cumulative-effect adjustments, and fair value hedge accounting adjustments. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
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-Name Accounting Standards Codification
-Section 50
-Paragraph 3
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-Publisher FASB
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+ References

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

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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-Publisher FASB
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+ References

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

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Amortized cost excluding accrued interest, after 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/2009/role/commonPracticeRef
-Topic 326
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