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Note 3 - Securities - Fair Value of Securities (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Amortized cost | $ 14,475 | $ 23,538
Gross unrealized gains | 218 | 292
Gross unrealized losses | 0 | (1)
Fair value | 14,693 | 23,829
Certificates of Deposit [Member] |  |
Amortized cost | 7,441 | 15,117
Gross unrealized gains | 0 | 0
Gross unrealized losses | 0 | 0
Fair value | 7,441 | 15,117
US States and Political Subdivisions Debt Securities [Member] |  |
Amortized cost | 401 | 402
Gross unrealized gains | 1 | 7
Gross unrealized losses | 0 | 0
Fair value | 402 | 409
Residential Mortgage Backed Securities [Member] |  |
Amortized cost | 4,909 | 5,826
Gross unrealized gains | 212 | 282
Gross unrealized losses | 0 | 0
Fair value | 5,121 | 6,108
Collateralized Mortgage Backed Securities [Member] |  |
Amortized cost | 1,724 | 2,193
Gross unrealized gains | 5 | 3
Gross unrealized losses | 0 | (1)
Fair value | $ 1,729 | $ 2,195

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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563 + 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563 + Details
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