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Note 2 - Investment Securities (Tables) | 3 Months Ended
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Mar. 31, 2015
Disclosure Text Block Supplement [Abstract] |
Marketable Securities [Table Text Block] |
(In thousands) |  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |
March 31, 2015 |  |  |  |  |  |  |  |  |  |  |  |
Securities available for sale: |  |  |  |  |  |  |  |  |  |  |  |
Agency mortgage-backed securities |  | $ | 31,857 |  |  | $ | 397 |  |  | $ | 27 |  |  | $ | 32,227 |
Agency CMO |  |  | 12,705 |  |  |  | 83 |  |  |  | 60 |  |  |  | 12,728 |
Other debt securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agency notes and bonds |  |  | 21,226 |  |  |  | 60 |  |  |  | 5 |  |  |  | 21,281 |
Municipal obligations |  |  | 31,904 |  |  |  | 1,263 |  |  |  | 57 |  |  |  | 33,110 |
Subtotal - debt securities |  |  | 97,692 |  |  |  | 1,803 |  |  |  | 149 |  |  |  | 99,346 |
Mutual funds |  |  | 95 |  |  |  | 0 |  |  |  | 0 |  |  |  | 95 |
Total securities available for sale |  | $ | 97,787 |  |  | $ | 1,803 |  |  | $ | 149 |  |  | $ | 99,441 |
Securities held to maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agency mortgage-backed securities |  | $ | 6 |  |  | $ | 0 |  |  | $ | 0 |  |  | $ | 6 |
Total securities held to maturity |  | $ | 6 |  |  | $ | 0 |  |  | $ | 0 |  |  | $ | 6 |
December 31, 2014 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Securities available for sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agency mortgage-backed securities |  | $ | 32,135 |  |  | $ | 240 |  |  | $ | 79 |  |  | $ | 32,296 |
Agency CMO |  |  | 14,461 |  |  |  | 74 |  |  |  | 150 |  |  |  | 14,385 |
Other debt securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agency notes and bonds |  |  | 18,136 |  |  |  | 32 |  |  |  | 48 |  |  |  | 18,120 |
Municipal obligations |  |  | 32,178 |  |  |  | 1,242 |  |  |  | 78 |  |  |  | 33,342 |
Subtotal - debt securities |  |  | 96,910 |  |  |  | 1,588 |  |  |  | 355 |  |  |  | 98,143 |
Mutual funds |  |  | 2,083 |  |  |  | 0 |  |  |  | 0 |  |  |  | 2,083 |
Total securities available for sale |  | $ | 98,993 |  |  | $ | 1,588 |  |  | $ | 355 |  |  | $ | 100,226 |
Securities held to maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agency mortgage-backed securities |  | $ | 6 |  |  | $ | 0 |  |  | $ | 0 |  |  | $ | 6 |
Total securities held to maturity |  | $ | 6 |  |  | $ | 0 |  |  | $ | 0 |  |  | $ | 6 |
Investments Classified by Contractual Maturity Date [Table Text Block] |
|  | Securities Available for Sale |  |  | Securities Held to Maturity |
|  | Amortized Cost |  |  | Fair Value |  |  | Amortized Cost |  |  | Fair Value |
(In thousands) |  |  |  |  |  |  |  |  |  |  |  |
Due in one year or less |  | $ | 1,074 |  |  | $ | 1,080 |  |  | $ | 0 |  |  | $ | 0 |
Due after one year through five years |  |  | 19,274 |  |  |  | 19,405 |  |  |  | 0 |  |  |  | 0 |
Due after five years through ten years |  |  | 20,009 |  |  |  | 20,537 |  |  |  |  |  |  |  |  |
Due after ten years |  |  | 12,773 |  |  |  | 13,369 |  |  |  | 0 |  |  |  | 0 |
|  |  | 53,130 |  |  |  | 54,391 |  |  |  | 0 |  |  |  | 0 |
Mortgage-backed securities and CMO |  |  | 44,562 |  |  |  | 44,955 |  |  |  | 6 |  |  |  | 6 |
|  | $ | 97,692 |  |  | $ | 99,346 |  |  | $ | 6 |  |  | $ | 6 |
Schedule of Unrealized Loss on Investments [Table Text Block] |
|  | Number of Investment Positions |  |  | Fair Value |  |  | Gross Unrealized Losses |
(Dollars in thousands) |  |  |  |  |  |  |  |  |
Continuous loss position less than twelve months: |  |  |  |  |  |  |  |  |
Agency notes and bonds |  |  | 1 |  |  | $ | 996 |  |  | $ | 3 |
Agency CMO |  |  | 1 |  |  |  | 35 |  |  |  | 1 |
Agency mortgage-backed securities |  |  | 1 |  |  |  | 1,165 |  |  |  | 2 |
Muncipal obligations |  |  | 9 |  |  |  | 2,680 |  |  |  | 15 |
Total less than twelve months |  |  | 12 |  |  |  | 4,876 |  |  |  | 21 |
Continuous loss position more than twelve months: |  |  |  |  |  |  |  |  |  |  |  |
Agency notes and bonds |  |  | 1 |  |  |  | 1,001 |  |  |  | 2 |
Agency CMO |  |  | 9 |  |  |  | 6,997 |  |  |  | 59 |
Agency mortgage-backed securities |  |  | 4 |  |  |  | 4,617 |  |  |  | 25 |
Muncipal obligations |  |  | 5 |  |  |  | 2,353 |  |  |  | 42 |
Total more than twelve months |  |  | 19 |  |  |  | 14,968 |  |  |  | 128 |
Total securities available for saleW |  |  | 31 |  |  | $ | 19,844 |  |  | $ | 149 |

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