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Note 6 - Securities (Tables) | 3 Months Ended
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Mar. 31, 2020
Notes Tables |
Available-for-sale Securities [Table Text Block] |
(In Thousands) |  |  |  |  |  |  |  |  |  |  |
|  |  |  |  |  | March 31, 2020 |  |  |  |  |
|  |  |  |  |  | Gross |  |  | Gross |  |  |  |  |
|  |  |  |  |  | Unrealized |  |  | Unrealized |  |  |  |  |
|  | Amortized |  |  | Holding |  |  | Holding |  |  | Fair |
|  | Cost |  |  | Gains |  |  | Losses |  |  | Value |
Obligations of U.S. Government agencies |  | $ | 15,704 |  |  | $ | 704 |  |  | $ | 0 |  |  | $ | 16,408 |
Obligations of states and political subdivisions: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax-exempt |  |  | 78,126 |  |  |  | 2,982 |  |  |  | (36 | ) |  |  | 81,072 |
Taxable |  |  | 35,764 |  |  |  | 1,348 |  |  |  | (38 | ) |  |  | 37,074 |
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Residential pass-through securities |  |  | 54,280 |  |  |  | 1,472 |  |  |  | 0 |  |  |  | 55,752 |
Residential collateralized mortgage obligations |  |  | 101,130 |  |  |  | 2,435 |  |  |  | (9 | ) |  |  | 103,556 |
Commercial mortgage-backed securities |  |  | 45,727 |  |  |  | 2,846 |  |  |  | (19 | ) |  |  | 48,554 |
Total available-for-sale debt securities |  | $ | 330,731 |  |  | $ | 11,787 |  |  | $ | (102 | ) |  | $ | 342,416 |
(In Thousands) |  |  |  |  |  |  |  |  |  |  |
|  |  |  |  |  | December 31, 2019 |  |  |  |  |
|  |  |  |  |  | Gross |  |  | Gross |  |  |  |  |
|  |  |  |  |  | Unrealized |  |  | Unrealized |  |  |  |  |
|  | Amortized |  |  | Holding |  |  | Holding |  |  | Fair |
|  | Cost |  |  | Gains |  |  | Losses |  |  | Value |
Obligations of U.S. Government agencies |  | $ | 16,380 |  |  | $ | 620 |  |  | $ | 0 |  |  | $ | 17,000 |
Obligations of states and political subdivisions: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax-exempt |  |  | 68,787 |  |  |  | 2,011 |  |  |  | (38 | ) |  |  | 70,760 |
Taxable |  |  | 35,446 |  |  |  | 927 |  |  |  | (70 | ) |  |  | 36,303 |
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
agencies: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Residential pass-through securities |  |  | 58,875 |  |  |  | 472 |  |  |  | (137 | ) |  |  | 59,210 |
Residential collateralized mortgage obligations |  |  | 115,025 |  |  |  | 308 |  |  |  | (610 | ) |  |  | 114,723 |
Commercial mortgage-backed securities |  |  | 47,765 |  |  |  | 1,069 |  |  |  | (107 | ) |  |  | 48,727 |
Total available-for-sale debt securities |  | $ | 342,278 |  |  | $ | 5,407 |  |  | $ | (962 | ) |  | $ | 346,723 |
Schedule of Unrealized Loss on Investments [Table Text Block] |
|  | Less Than 12 Months |  |  | 12 Months or More |  |  | Total |
|  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |
|  | Value |  |  | Losses |  |  | Value |  |  | Losses |  |  | Value |  |  | Losses |
Obligations of states and political subdivisions: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax-exempt |  | $ | 2,968 |  |  | $ | (36 | ) |  | $ | 0 |  |  | $ | 0 |  |  | $ | 2,968 |  |  | $ | (36 | )
Taxable |  |  | 1,270 |  |  |  | (38 | ) |  |  | 0 |  |  |  | 0 |  |  |  | 1,270 |  |  |  | (38 | )
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Residential collateralized mortgage obligations |  |  | 875 |  |  |  | (9 | ) |  |  | 0 |  |  |  | 0 |  |  |  | 875 |  |  |  | (9 | )
Commercial mortgage-backed securities |  |  | 3,613 |  |  |  | (19 | ) |  |  | 0 |  |  |  | 0 |  |  |  | 3,613 |  |  |  | (19 | )
Total temporary impaired available-for-sale debt securities |  | $ | 8,726 |  |  | $ | (102 | ) |  | $ | 0 |  |  | $ | 0 |  |  | $ | 8,726 |  |  | $ | (102 | )
|  | Less Than 12 Months |  |  | 12 Months or More |  |  | Total |
|  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |
|  | Value |  |  | Losses |  |  | Value |  |  | Losses |  |  | Value |  |  | Losses |
Obligations of states and political subdivisions: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax-exempt |  | $ | 6,429 |  |  | $ | (38 | ) |  | $ | 0 |  |  | $ | 0 |  |  | $ | 6,429 |  |  | $ | (38 | )
Taxable |  |  | 5,624 |  |  |  | (68 | ) |  |  | 161 |  |  |  | (2 | ) |  |  | 5,785 |  |  |  | (70 | )
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Residential pass-through securities |  |  | 9,771 |  |  |  | (35 | ) |  |  | 14,787 |  |  |  | (102 | ) |  |  | 24,558 |  |  |  | (137 | )
Residential collateralized mortgage obligations |  |  | 31,409 |  |  |  | (195 | ) |  |  | 30,535 |  |  |  | (415 | ) |  |  | 61,944 |  |  |  | (610 | )
Commercial mortgage-backed securities |  |  | 0 |  |  |  | 0 |  |  |  | 8,507 |  |  |  | (107 | ) |  |  | 8,507 |  |  |  | (107 | )
Total temporarily impaired available-for-sale debt securities |  | $ | 53,233 |  |  | $ | (336 | ) |  | $ | 53,990 |  |  | $ | (626 | ) |  | $ | 107,223 |  |  | $ | (962 | )
Realized Gain (Loss) on Investments [Table Text Block] |
(In Thousands) |  |  |
|  | 3 Months Ended |
|  | March 31, |  |  | March 31, |
|  | 2020 |  |  | 2019 |
Gross realized gains from sales |  | $ | 52 |  |  | $ | 0 |
Gross realized losses from sales |  |  | (52 | ) |  |  | 0 |
Net realized gains |  | $ | 0 |  |  | $ | 0 |
Investments Classified by Contractual Maturity Date [Table Text Block] |
(In Thousands) |  |  |
|  | March 31, 2020 |
|  | Amortized |  |  | Fair |
|  | Cost |  |  | Value |
Due in one year or less |  | $ | 6,611 |  |  | $ | 6,644 |
Due from one year through five years |  |  | 33,945 |  |  |  | 34,945 |
Due from five years through ten years |  |  | 43,596 |  |  |  | 45,168 |
Due after ten years |  |  | 45,442 |  |  |  | 47,797 |
Sub-total |  |  | 129,594 |  |  |  | 134,554 |
Mortgage-backed securities issued or guaranteed by U.S. Government agencies or sponsored agencies: |  |  |  |  |  |  |  |
Residential pass-through securities |  |  | 54,280 |  |  |  | 55,752 |
Residential collateralized mortgage obligations |  |  | 101,130 |  |  |  | 103,556 |
Commercial mortgage-backed securities |  |  | 45,727 |  |  |  | 48,554 |
Total |  | $ | 330,731 |  |  | $ | 342,416 |

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