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Note 3 - Securities (Tables) | 9 Months Ended
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Sep. 30, 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 |
September 30, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government sponsored entity securities |  | $ | 16,835 |  |  | $ | ---- |  |  | $ | (383 | ) |  | $ | 16,452 |
Agency mortgage-backed securities, residential |  |  | 91,880 |  |  |  | 51 |  |  |  | (3,506 | ) |  |  | 88,425 |
Total securities |  | $ | 108,715 |  |  | $ | 51 |  |  | $ | (3,889 | ) |  | $ | 104,877 |
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 |
September 30, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Obligations of states and political subdivisions |  | $ | 17,216 |  |  | $ | 460 |  |  | $ | (141 | ) |  | $ | 17,535 |
Agency mortgage-backed securities, residential |  |  | 3 |  |  |  | ---- |  |  |  | ---- |  |  |  | 3 |
Total securities |  | $ | 17,219 |  |  | $ | 460 |  |  | $ | (141 | ) |  | $ | 17,538 |
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 |  | $ | ---- |  |  | $ | ---- |  |  | $ | 2,416 |  |  | $ | 2,134 |
Due in over one to five years |  |  | 16,835 |  |  |  | 16,452 |  |  |  | 5,448 |  |  |  | 5,877 |
Due in over five to ten years |  |  | ---- |  |  |  | ---- |  |  |  | 7,094 |  |  |  | 7,365 |
Due after ten years |  |  | ---- |  |  |  | ---- |  |  |  | 2,258 |  |  |  | 2,159 |
Agency mortgage-backed securities, residential |  |  | 91,880 |  |  |  | 88,425 |  |  |  | 3 |  |  |  | 3 |
Total debt securities |  | $ | 108,715 |  |  | $ | 104,877 |  |  | $ | 17,219 |  |  | $ | 17,538 |
Schedule of Unrealized Loss on Investments [Table Text Block] |
September 30 , 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 |  | $ | 7,896 |  |  | $ | (42 | ) |  | $ | 8,556 |  |  | $ | (341 | ) |  | $ | 16,452 |  |  | $ | (383 | )
Agency mortgage-backed securities, residential |  |  | 25,248 |  |  |  | (294 | ) |  |  | 58,158 |  |  |  | (3,212 | ) |  |  | 83,406 |  |  |  | (3,506 | )
Total available for sale |  | $ | 33,144 |  |  | $ | (336 | ) |  | $ | 66,714 |  |  | $ | (3,553 | ) |  | $ | 99,858 |  |  | $ | (3,889 | )
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 |  | $ | 3,620 |  |  | $ | (20 | ) |  | $ | 1,308 |  |  | $ | (121 | ) |  | $ | 4,928 |  |  | $ | (141 | )
Total held to maturity |  | $ | 3,620 |  |  | $ | (20 | ) |  | $ | 1,308 |  |  | $ | (121 | ) |  | $ | 4,928 |  |  | $ | (141 | )
|  | 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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