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Note 7 - Investment and Equity Securities (Tables) | 9 Months Ended
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Sep. 30, 2020
Notes Tables |
Schedule of Available-for-sale Securities Reconciliation [Table Text Block] |
|  | September 30, 2020 |
|  |  |  |  |  | Gross |  |  | Gross |  |  |  |  |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Fair |
(Dollar amounts in thousands) |  | Cost |  |  | Gains |  |  | Losses |  |  | Value |
Subordinated debt |  | $ | 16,100 |  |  | $ | 498 |  |  | $ | - |  |  | $ | 16,598 |
Obligations of states and political subdivisions: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Taxable |  |  | 500 |  |  |  | 2 |  |  |  | - |  |  |  | 502 |
Tax-exempt |  |  | 76,718 |  |  |  | 4,083 |  |  |  | - |  |  |  | 80,801 |
Mortgage-backed securities in government-sponsored entities |  |  | 14,489 |  |  |  | 579 |  |  |  | (1 | ) |  |  | 15,067 |
Total |  | $ | 107,807 |  |  | $ | 5,162 |  |  | $ | (1 | ) |  | $ | 112,968 |
|  | December 31, 2019 |
|  |  |  |  |  | Gross |  |  | Gross |  |  |  |  |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Fair |
(Dollar amounts in thousands) |  | Cost |  |  | Gains |  |  | Losses |  |  | Value |
Subordinated debt |  | $ | 4,000 |  |  | $ | 126 |  |  | $ | - |  |  | $ | 4,126 |
Obligations of states and political subdivisions: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Taxable |  |  | 500 |  |  |  | 1 |  |  |  | - |  |  |  | 501 |
Tax-exempt |  |  | 80,436 |  |  |  | 2,065 |  |  |  | (25 | ) |  |  | 82,476 |
Mortgage-backed securities in government-sponsored entities |  |  | 18,465 |  |  |  | 274 |  |  |  | (109 | ) |  |  | 18,630 |
Total |  | $ | 103,401 |  |  | $ | 2,466 |  |  | $ | (134 | ) |  | $ | 105,733 |
Investments Classified by Contractual Maturity Date [Table Text Block] |
|  | Amortized |  |  | Fair |
(Dollar amounts in thousands) |  | Cost |  |  | Value |
Due in one year or less |  | $ | 3 |  |  | $ | 3 |
Due after one year through five years |  |  | 2,240 |  |  |  | 2,282 |
Due after five years through ten years |  |  | 27,348 |  |  |  | 28,114 |
Due after ten years |  |  | 78,216 |  |  |  | 82,569 |
Total |  | $ | 107,807 |  |  | $ | 112,968 |
Realized Gain (Loss) on Investments [Table Text Block] |
(Dollar amounts in thousands) |  | For the Three Months Ended September 30, |  |  | For the Nine Months Ended September 30, |
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Proceeds from sales |  | $ | - |  |  | $ | 518 |  |  | $ | - |  |  | $ | 12,325 |
Gross realized gains |  |  | - |  |  |  | 4 |  |  |  | - |  |  |  | 227 |
Gross realized losses |  |  | - |  |  |  | - |  |  |  | - |  |  |  | (33 | )
Schedule of Unrealized Loss on Investments [Table Text Block] |
|  | September 30, 2020 |
|  | Less than Twelve Months |  |  | Twelve Months or Greater |  |  | Total |
|  |  |  |  |  | Gross |  |  |  |  |  |  | Gross |  |  |  |  |  |  | Gross |
|  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |
(Dollar amounts in thousands) |  | Value |  |  | Losses |  |  | Value |  |  | Losses |  |  | Value |  |  | Losses |
Mortgage-backed securities in government-sponsored entities |  | $ | 1,141 |  |  | $ | (1 | ) |  | $ | - |  |  | $ | - |  |  | $ | 1,141 |  |  | $ | (1 | )
Total |  | $ | 1,141 |  |  | $ | (1 | ) |  | $ | - |  |  | $ | - |  |  | $ | 1,141 |  |  | $ | (1 | )
|  | December 31, 2019 |
|  | Less than Twelve Months |  |  | Twelve Months or Greater |  |  | Total |
|  |  |  |  |  | Gross |  |  |  |  |  |  | Gross |  |  |  |  |  |  | Gross |
|  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |
(Dollar amounts in thousands) |  | Value |  |  | Losses |  |  | Value |  |  | Losses |  |  | Value |  |  | Losses |
Obligations of states and political subdivisions: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax-exempt |  | $ | 4,324 |  |  | $ | (25 | ) |  | $ | - |  |  | $ | - |  |  | $ | 4,324 |  |  | $ | (25 | )
Mortgage-backed securities in government-sponsored entities |  |  | 1,409 |  |  |  | (2 | ) |  |  | 8,223 |  |  |  | (107 | ) |  |  | 9,632 |  |  |  | (109 | )
Total |  | $ | 5,733 |  |  | $ | (27 | ) |  | $ | 8,223 |  |  | $ | (107 | ) |  | $ | 13,956 |  |  | $ | (134 | )

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