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Note 3 - Available-for-sale Securities (Tables) | 9 Months Ended
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Sep. 30, 2020
Notes Tables |
Debt Securities, Available-for-sale [Table Text Block] |
(In thousands) |  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized (Losses) |  |  | Fair Value |
September 30, 2020: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U. S. Government agency mortgage-backed securities |  | $ | 15,578 |  |  | $ | 139 |  |  | $ | (12 | ) |  | $ | 15,705 |
Corporate bonds |  |  | 18,015 |  |  |  | 123 |  |  |  | (888 | ) |  |  | 17,250 |
Subordinated notes |  |  | 9,033 |  |  |  | 120 |  |  |  | (140 | ) |  |  | 9,013 |
SBA loan pools |  |  | 5,369 |  |  |  | - |  |  |  | (68 | ) |  |  | 5,301 |
Municipal bonds |  |  | 564 |  |  |  | - |  |  |  | (10 | ) |  |  | 554 |
|  | $ | 48,559 |  |  | $ | 382 |  |  | $ | (1,118 | ) |  | $ | 47,823 |
December 31, 2019: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U. S. Government agency mortgage-backed securities |  | $ | 16,663 |  |  | $ | 90 |  |  | $ | (68 | ) |  | $ | 16,685 |
Corporate bonds |  |  | 18,018 |  |  |  | 133 |  |  |  | (838 | ) |  |  | 17,313 |
Subordinated notes |  |  | 9,022 |  |  |  | 182 |  |  |  | - |  |  |  | 9,204 |
U.S. Treasury notes |  |  | 5,157 |  |  |  | - |  |  |  | (42 | ) |  |  | 5,115 |
|  | $ | 48,860 |  |  | $ | 405 |  |  | $ | (948 | ) |  | $ | 48,317 |
Schedule of Unrealized Loss on Investments [Table Text Block] |
(In thousands) |  | Less than 12 Months |  |  | 12 Months or More |  |  | Total |
|  | Fair Value |  |  | Unrealized (Loss) |  |  | Fair Value |  |  | Unrealized (Loss) |  |  | Fair Value |  |  | Unrealized (Loss) |
September 30, 2020: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U. S. Government agency mortgage-backed securities |  | $ | 3,510 |  |  | $ | (11 | ) |  | $ | 1,537 |  |  | $ | (1 | ) |  | $ | 5,047 |  |  | $ | (12 | )
Corporate bonds |  |  | - |  |  |  | - |  |  |  | 13,113 |  |  |  | (888 | ) |  |  | 13,113 |  |  |  | (888 | )
Subordinated notes |  |  | 5,393 |  |  |  | (140 | ) |  |  | - |  |  |  | - |  |  |  | 5,393 |  |  |  | (140 | )
SBA loan pools |  |  | 961 |  |  |  | (12 | ) |  |  | 4,340 |  |  |  | (56 | ) |  |  | 5,301 |  |  |  | (68 | )
Municipal bonds |  |  | 398 |  |  |  | (10 | ) |  |  | - |  |  |  | - |  |  |  | 398 |  |  |  | (10 | )
|  | $ | 10,262 |  |  | $ | (173 | ) |  | $ | 18,990 |  |  | $ | (945 | ) |  | $ | 29,252 |  |  | $ | (1,118 | )
December 31, 2019: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U. S. Government agency mortgage-backed securities |  | $ | 2,609 |  |  | $ | (20 | ) |  | $ | 3,919 |  |  | $ | (48 | ) |  | $ | 6,528 |  |  | $ | (68 | )
Corporate bonds |  |  | - |  |  |  | - |  |  |  | 13,162 |  |  |  | (838 | ) |  |  | 13,162 |  |  |  | (838 | )
SBA loan pools |  |  | 5,115 |  |  |  | (42 | ) |  |  | - |  |  |  | - |  |  |  | 5,115 |  |  |  | (42 | )
|  | $ | 7,724 |  |  | $ | (62 | ) |  | $ | 17,081 |  |  | $ | (886 | ) |  | $ | 24,805 |  |  | $ | (948 | )
Investments Classified by Contractual Maturity Date [Table Text Block] |
(In thousands) |  | Amortized Cost |  |  | Fair Value |
|  | Due Within 5 years |  |  | Due After 5 years through 10 years |  |  | Due After 10 years |  |  | Total |  |  | Due Within 5 years |  |  | Due After 5 years through 10 years |  |  | Due After 10 years |  |  | Total |
September 30, 2020: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate bonds |  | $ | 4,015 |  |  | $ | 14,000 |  |  | $ | - |  |  | $ | 18,015 |  |  | $ | 4,139 |  |  | $ | 13,111 |  |  | $ | - |  |  | $ | 17,250 |
Subordinated notes |  |  | - |  |  |  | 9,033 |  |  |  | - |  |  |  | 9,033 |  |  |  | - |  |  |  | 9,013 |  |  |  | - |  |  |  | 9,013 |
SBA loan pools |  |  | - |  |  |  | 5,369 |  |  |  | - |  |  |  | 5,369 |  |  |  | - |  |  |  | 5,301 |  |  |  | - |  |  |  | 5,301 |
Municipal bonds |  |  | - |  |  |  | 564 |  |  |  | - |  |  |  | 564 |  |  |  | - |  |  |  | 554 |  |  |  | - |  |  |  | 554 |
Available-for-sale securities with stated maturity dates |  |  | 4,015 |  |  |  | 28,966 |  |  |  | - |  |  |  | 32,981 |  |  |  | 4,139 |  |  |  | 27,979 |  |  |  | - |  |  |  | 32,118 |
U. S. Government agency mortgage-backed securities |  |  | 3,423 |  |  |  | 1,622 |  |  |  | 10,533 |  |  |  | 15,578 |  |  |  | 3,437 |  |  |  | 1,649 |  |  |  | 10,619 |  |  |  | 15,705 |
|  | $ | 7,438 |  |  | $ | 30,588 |  |  | $ | 10,533 |  |  | $ | 48,559 |  |  | $ | 7,576 |  |  | $ | 29,628 |  |  | $ | 10,619 |  |  | $ | 47,823 |
December 31, 2019: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate bonds |  | $ | 4,018 |  |  | $ | 14,000 |  |  | $ | - |  |  | $ | 18,018 |  |  | $ | 4,151 |  |  | $ | 13,162 |  |  | $ | - |  |  | $ | 17,313 |
Subordinated notes |  |  | - |  |  |  | 9,022 |  |  |  | - |  |  |  | 9,022 |  |  |  | - |  |  |  | 9,204 |  |  |  | - |  |  |  | 9,204 |
SBA loan pools |  |  | - |  |  |  | 5,157 |  |  |  | - |  |  |  | 5,157 |  |  |  | - |  |  |  | 5,115 |  |  |  | - |  |  |  | 5,115 |
Available-for-sale securities with stated maturity dates |  |  | 4,018 |  |  |  | 28,179 |  |  |  | - |  |  |  | 32,197 |  |  |  | 4,151 |  |  |  | 27,481 |  |  |  | - |  |  |  | 31,632 |
U. S. Government agency mortgage-backed securities |  |  | 3,805 |  |  |  | 2,047 |  |  |  | 10,811 |  |  |  | 16,663 |  |  |  | 3,810 |  |  |  | 2,016 |  |  |  | 10,859 |  |  |  | 16,685 |
|  | $ | 7,823 |  |  | $ | 30,226 |  |  | $ | 10,811 |  |  | $ | 48,860 |  |  | $ | 7,961 |  |  | $ | 29,497 |  |  | $ | 10,859 |  |  | $ | 48,317 |

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