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Note 3 - Investment Securities Available For Sale (Tables) | 12 Months Ended
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Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract] |
Schedule of Available-for-sale Securities Reconciliation [Table Text Block] |
|  | December 31, 2014 |
|  |  |  |  |  | Gross |  |  | Gross |  |  |  |  |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Fair |
(Dollar amounts in thousands) |  | Cost |  |  | Gains |  |  | Losses |  |  | Value |
U.S. government agency securities |  | $ | 23,035 |  |  | $ | 311 |  |  | $ | (450 | ) |  | $ | 22,896 |
Obligations of states and political subdivisions: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Taxable |  |  | 2,953 |  |  |  | 226 |  |  |  | - |  |  |  | 3,179 |
Tax-exempt |  |  | 91,916 |  |  |  | 3,803 |  |  |  | (553 | ) |  |  | 95,166 |
Mortgage-backed securities in government-sponsored entities |  |  | 29,150 |  |  |  | 475 |  |  |  | (234 | ) |  |  | 29,391 |
Private-label mortgage-backed securities |  |  | 2,672 |  |  |  | 247 |  |  |  | - |  |  |  | 2,919 |
Total debt securities |  |  | 149,726 |  |  |  | 5,062 |  |  |  | (1,237 | ) |  |  | 153,551 |
Equity securities in financial institutions |  |  | 750 |  |  |  | 33 |  |  |  | - |  |  |  | 783 |
Total |  | $ | 150,476 |  |  | $ | 5,095 |  |  | $ | (1,237 | ) |  | $ | 154,334 |
|  | December 31, 2013 |
|  |  |  |  |  | Gross |  |  | Gross |  |  |  |  |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Fair |
(Dollar amounts in thousands) |  | Cost |  |  | Gains |  |  | Losses |  |  | Value |
U.S. government agency securities |  | $ | 27,289 |  |  | $ | 135 |  |  | $ | (1,661 | ) |  | $ | 25,763 |
Obligations of states and political subdivisions: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Taxable |  |  | 3,787 |  |  |  | 46 |  |  |  | (38 | ) |  |  | 3,795 |
Tax-exempt |  |  | 86,524 |  |  |  | 1,562 |  |  |  | (3,267 | ) |  |  | 84,819 |
Mortgage-backed securities in government-sponsored entities |  |  | 38,816 |  |  |  | 535 |  |  |  | (1,028 | ) |  |  | 38,323 |
Private-label mortgage-backed securities |  |  | 3,366 |  |  |  | 327 |  |  |  | - |  |  |  | 3,693 |
Total debt securities |  |  | 159,782 |  |  |  | 2,605 |  |  |  | (5,994 | ) |  |  | 156,393 |
Equity securities in financial institutions |  |  | 750 |  |  |  | - |  |  |  | - |  |  |  | 750 |
Total |  | $ | 160,532 |  |  | $ | 2,605 |  |  | $ | (5,994 | ) |  | $ | 157,143 |
Investments Classified by Contractual Maturity Date [Table Text Block] |
|  | Amortized |  |  | Fair |
(Dollar amounts in thousands) |  | Cost |  |  | Value |
Due in one year or less |  | $ | 571 |  |  | $ | 585 |
Due after one year through five years |  |  | 10,029 |  |  |  | 10,200 |
Due after five years through ten years |  |  | 20,960 |  |  |  | 21,602 |
Due after ten years |  |  | 118,166 |  |  |  | 121,164 |
Total |  | $ | 149,726 |  |  | $ | 153,551 |
Realized Gain (Loss) on Investments [Table Text Block] |
|  | 2014 |  |  | 2013 |  |  | 2012 |
Proceeds from sales |  | $ | 8,383 |  |  | $ | 25,088 |  |  | $ | 32,985 |
Gross realized gains |  |  | 306 |  |  |  | 186 |  |  |  | 704 |
Gross realized losses |  |  | (58 | ) |  |  | (175 | ) |  |  | (94 | )
Schedule of Unrealized Loss on Investments [Table Text Block] |
|  | December 31, 2014 |
|  | 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 |
U.S. government agency securities |  | $ | - |  |  | $ | - |  |  | $ | 15,734 |  |  | $ | (450 | ) |  | $ | 15,734 |  |  | $ | (450 | )
Obligations of states and political subdivisions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax-exempt |  |  | 2,406 |  |  |  | (10 | ) |  |  | 18,232 |  |  |  | (543 | ) |  |  | 20,638 |  |  |  | (553 | )
Mortgage-backed securities in government-sponsored entities |  |  | - |  |  |  | - |  |  |  | 16,774 |  |  |  | (234 | ) |  |  | 16,774 |  |  |  | (234 | )
Total |  | $ | 2,406 |  |  | $ | (10 | ) |  | $ | 50,740 |  |  | $ | (1,227 | ) |  | $ | 53,146 |  |  | $ | (1,237 | )
|  | December 31, 2013 |
|  | 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 |
U.S. government agency securities |  | $ | 13,130 |  |  | $ | (929 | ) |  | $ | 7,166 |  |  | $ | (732 | ) |  | $ | 20,295 |  |  | $ | (1,661 | )
Obligations of states and political subdivisions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Taxable |  |  | 1,301 |  |  |  | (38 | ) |  |  | - |  |  |  | - |  |  |  | 1,301 |  |  |  | (38 | )
Tax-exempt |  |  | 26,743 |  |  |  | (2,883 | ) |  |  | 2,678 |  |  |  | (383 | ) |  |  | 29,421 |  |  |  | (3,267 | )
Mortgage-backed securities in government-sponsored entities |  |  | 18,082 |  |  |  | (757 | ) |  |  | 5,248 |  |  |  | (271 | ) |  |  | 23,330 |  |  |  | (1,028 | )
Total |  | $ | 59,255 |  |  | $ | (4,608 | ) |  | $ | 15,092 |  |  | $ | (1,386 | ) |  | $ | 74,347 |  |  | $ | (5,994 | )

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