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Note 3 - Securities (Tables) | 3 Months Ended
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Mar. 31, 2018
Notes Tables |
Available-for-sale Securities [Table Text Block] |
Securities Available for Sale |  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Estimated Fair Value |
March 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government sponsored entity securities |  | $ | 15,531 |  |  | $ | 8 |  |  | $ | (236 | ) |  | $ | 15,303 |
Agency mortgage-backed securities, residential |  |  | 92,822 |  |  |  | 149 |  |  |  | (2,817 | ) |  |  | 90,154 |
Total securities |  | $ | 108,353 |  |  | $ | 157 |  |  | $ | (3,053 | ) |  | $ | 105,457 |
December 31, 201 7 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government sponsored entity securities |  | $ | 13,622 |  |  | $ | ---- |  |  | $ | (149 | ) |  | $ | 13,473 |
Agency mortgage-backed securities, residential |  |  | 88,833 |  |  |  | 300 |  |  |  | (1,481 | ) |  |  | 87,652 |
Total securities |  | $ | 102,455 |  |  | $ | 300 |  |  | $ | (1,630 | ) |  | $ | 101,125 |
Debt Securities, Held-to-maturity [Table Text Block] |
Securities Held to Maturity |  | Amortized Cost |  |  | Gross Unrecognized Gains |  |  | Gross Unrecognized Losses |  |  | Estimated Fair Value |
March 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Obligations of states and political subdivisions |  | $ | 17,350 |  |  | $ | 558 |  |  | $ | (102 | ) |  | $ | 17,806 |
Agency mortgage-backed securities, residential |  |  | 3 |  |  |  | ---- |  |  |  | ---- |  |  |  | 3 |
Total securities |  | $ | 17,353 |  |  | $ | 558 |  |  | $ | (102 | ) |  | $ | 17,809 |
December 31, 201 7 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Obligations of states and political subdivisions |  | $ | 17,577 |  |  | $ | 533 |  |  | $ | (35 | ) |  | $ | 18,075 |
Agency mortgage-backed securities, residential |  |  | 4 |  |  |  | ---- |  |  |  | ---- |  |  |  | 4 |
Total securities |  | $ | 17,581 |  |  | $ | 533 |  |  | $ | (35 | ) |  | $ | 18,079 |
Investments Classified by Contractual Maturity Date [Table Text Block] |
|  | Available for Sale |  |  | Held to Maturity |
Debt Securities: |  | Amortized Cost |  |  | Estimated Fair Value |  |  | Amortized Cost |  |  | Estimated Fair Value |
Due in one year or less |  | $ | 4,600 |  |  | $ | 4,597 |  |  | $ | 1,206 |  |  | $ | 1,213 |
Due in over one to five years |  |  | 10,931 |  |  |  | 10,706 |  |  |  | 6,748 |  |  |  | 6,955 |
Due in over five to ten years |  |  | ---- |  |  |  | ---- |  |  |  | 7,137 |  |  |  | 7,456 |
Due after ten years |  |  | ---- |  |  |  | ---- |  |  |  | 2,259 |  |  |  | 2,182 |
Agency mortgage-backed securities, residential |  |  | 92,822 |  |  |  | 90,154 |  |  |  | 3 |  |  |  | 3 |
Total debt securities |  | $ | 108,353 |  |  | $ | 105,457 |  |  | $ | 17,353 |  |  | $ | 17,809 |
Schedule of Unrealized Loss on Investments [Table Text Block] |
March 31, 2018 |  | Less Than 12 Months |  |  | 12 Months or More |  |  | Total |
|  | Fair Value |  |  | Unrealized Loss |  |  | Fair Value |  |  | Unrealized Loss |  |  | Fair Value |  |  | Unrealized Loss |
Securities Available for Sale |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government sponsored entity securities |  | $ | 3,882 |  |  | $ | (126 | ) |  | $ | 9,434 |  |  | $ | (110 | ) |  | $ | 13,316 |  |  | $ | (236 | )
Agency mortgage-backed securities, residential |  |  | 50,766 |  |  |  | (1,212 | ) |  |  | 30,110 |  |  |  | (1,605 | ) |  |  | 80,876 |  |  |  | (2,817 | )
Total available for sale |  | $ | 54,648 |  |  | $ | (1,338 | ) |  | $ | 39,544 |  |  | $ | (1,715 | ) |  | $ | 94,192 |  |  | $ | (3,053 | )
December 31, 201 7 |  | Less Than 12 Months |  |  | 12 Months or More |  |  | Total |
|  | Fair Value |  |  | Unrealized Loss |  |  | Fair Value |  |  | Unrealized Loss |  |  | Fair Value |  |  | Unrealized Loss |
Securities Available for Sale |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government sponsored entity securities |  | $ | 6,910 |  |  | $ | (97 | ) |  | $ | 6,563 |  |  | $ | (52 | ) |  | $ | 13,473 |  |  | $ | (149 | )
Agency mortgage-backed securities, residential |  |  | 37,421 |  |  |  | (434 | ) |  |  | 31,763 |  |  |  | (1,047 | ) |  |  | 69,184 |  |  |  | (1,481 | )
Total available for sale |  | $ | 44,331 |  |  | $ | (531 | ) |  | $ | 38,326 |  |  | $ (1,099)_ |  |  | $ | 82,657 |  |  | $ | (1,630 | )
Held-to-maturity Securities [Member] |
Notes Tables |
Schedule of Unrealized Loss on Investments [Table Text Block] |
|  | Less Than 12 Months |  |  | 12 Months or More |  |  | Total |
|  | Fair Value |  |  | Unrecognized Loss |  |  | Fair Value |  |  | Unrecognized Loss |  |  | Fair Value |  |  | Unrecognized Loss |
Securities Held to Maturity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Obligations of states and political subdivisions |  | $ | 1,792 |  |  | $ | (7 | ) |  | $ | 1,437 |  |  | $ | (95 | ) |  | $ | 3,229 |  |  | $ | (102 | )
Total held to maturity |  | $ | 1,792 |  |  | $ | (7 | ) |  | $ | 1,437 |  |  | $ | (95 | ) |  | $ | 3,229 |  |  | $ | (102 | )
|  | Less Than 12 Months |  |  | 12 Months or More |  |  | Total |
|  | Fair Value |  |  | Unrecognized Loss |  |  | Fair Value |  |  | Unrecognized Loss |  |  | Fair Value |  |  | Unrecognized Loss |
Securities Held to Maturity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Obligations of states and political subdivisions |  | $ | 362 |  |  | $ | (2 | ) |  | $ | 1,502 |  |  | $ | (33 | ) |  | $ | 1,864 |  |  | $ | (35 | )
Total held to maturity |  | $ | 362 |  |  | $ | (2 | ) |  | $ | 1,502 |  |  | $ | (33 | ) |  | $ | 1,864 |  |  | $ | (35 | )

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