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Note 2 - Securities - Amortized Cost and Estimated Fair Value of Debt Securities (Details) - USD ($) $ in Thousands | Dec. 31, 2025 | Dec. 31, 2024
--- | --- | ---
1 year or less | $ 1,610 | $ 1,000
1 to 5 years | 42,112 | 28,556
5 to 10 years | 25,222 | 30,591
After 10 years | 9,775 | 11,102
Fair value | 78,719 | 71,249
Gross unrealized gains | 5 | 0
Gross unrealized losses | (8,063) | (12,037)
Amortized cost | 86,777 | 83,286
US Treasury Notes Securities [Member] |  |
1 year or less | 0 | 0
1 to 5 years | 7,085 | 0
5 to 10 years | 0 | 0
After 10 years | 0 | 0
Fair value | 7,085 | 0
Gross unrealized gains | 4 | 0
Gross unrealized losses | (7) | 0
Amortized cost | 7,088 | 0
US Government Agencies Debt Securities [Member] |  |
1 year or less | 0 | 1,000
1 to 5 years | 7,208 | 3,047
5 to 10 years | 1,326 | 4,610
After 10 years | 0 | 0
Fair value | 8,534 | 8,657
Gross unrealized gains | 0 | 0
Gross unrealized losses | (685) | (1,062)
Amortized cost | 9,219 | 9,719
Municipal Bonds [Member] |  |
1 year or less | 198 | 0
1 to 5 years | 1,202 | 1,452
5 to 10 years | 3,642 | 2,401
After 10 years | 7,104 | 7,883
Fair value | 12,146 | 11,736
Gross unrealized gains | 0 | 0
Gross unrealized losses | (1,829) | (2,367)
Amortized cost | 13,975 | 14,103
Residential Mortgage-Backed Securities [Member] |  |
1 year or less | 0 | 0
1 to 5 years | 8,860 | 8,971
5 to 10 years | 14,336 | 15,794
After 10 years | 573 | 1,150
Fair value | 23,769 | 25,915
Gross unrealized gains | 0 | 0
Gross unrealized losses | (2,990) | (4,766)
Amortized cost | 26,759 | 30,681
Commercial Mortgage-Backed Securities [Member] |  |
1 year or less | 1,412 | 0
1 to 5 years | 17,757 | 15,086
5 to 10 years | 5,918 | 7,786
After 10 years | 2,098 | 2,069
Fair value | 27,185 | 24,941
Gross unrealized gains | 1 | 0
Gross unrealized losses | (2,552) | (3,842)
Amortized cost | $ 29,736 | $ 28,783

X
- Definition 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). + References 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 + Details
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- 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 + Details
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- Definition Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 320 -Name Accounting Standards Codification -Section 50 -Paragraph 3A -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477268/942-320-50-3A + Details
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- Definition Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 320 -Name Accounting Standards Codification -Section 50 -Paragraph 3A -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477268/942-320-50-3A + Details
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- Definition Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing after tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -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 -Topic 942 -SubTopic 320 -Name Accounting Standards Codification -Section 50 -Paragraph 3A -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477268/942-320-50-3A + Details
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