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Investment securities available-for-sale (Tables) | 6 Months Ended
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Jun. 30, 2012
Investment securities available-for-sale [Abstract] |
Amortized cost and fair value of available-for-sale securities aggregated by investment category | The amortized cost and fair value of investment securities available-for-sale aggregated by investment category at June 30, 2012 and December 31, 2011 are summarized as follows:
June 30, 2012 |  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |
U.S. Government-sponsored enterprises |  | $ | 29,524 |  |  | $ | 3,491 |  |  |  |  |  | $ | 33,015 |
State and municipals: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Taxable |  |  | 16,623 |  |  |  | 1,859 |  |  |  |  |  |  | 18,482 |
Tax-exempt |  |  | 33,551 |  |  |  | 1,955 |  |  | $ | 9 |  |  |  | 35,497 |
Corporate debt securities |  |  | 4,040 |  |  |  | 45 |  |  |  | 594 |  |  |  | 3,491 |
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agencies |  |  | 15,288 |  |  |  | 189 |  |  |  | 30 |  |  |  | 15,447 |
U.S. Government-sponsored enterprises |  |  | 22,175 |  |  |  | 135 |  |  |  | 116 |  |  |  | 22,194 |
Equity securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common |  |  | 487 |  |  |  | 22 |  |  |  | 39 |  |  |  | 470 |
Total |  | $ | 121,688 |  |  | $ | 7,696 |  |  | $ | 788 |  |  | $ | 128,596 |
December 31, 2011 |  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |
U.S. Government-sponsored enterprises |  | $ | 29,671 |  |  | $ | 3,105 |  |  |  |  |  |  | $ | 32,776 |
State and municipals: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Taxable |  |  | 18,120 |  |  |  | 1,608 |  |  |  |  |  |  |  | 19,728 |
Tax-exempt |  |  | 38,217 |  |  |  | 1,693 |  |  | $ | 224 |  |  |  | 39,686 |
Corporate debt securities |  |  | 4,462 |  |  |  | 330 |  |  |  | 942 |  |  |  | 3,850 |
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agencies |  |  | 16,827 |  |  |  | 185 |  |  |  | 100 |  |  |  | 16,912 |
U.S. Government-sponsored enterprises |  |  | 26,396 |  |  |  | 66 |  |  |  | 199 |  |  |  | 26,263 |
Equity securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred |  |  | 54 |  |  |  | 63 |  |  |  |  |  |  |  | 117 |
Common |  |  | 629 |  |  |  | 22 |  |  |  | 84 |  |  |  | 567 |
Total |  | $ | 134,376 |  |  | $ | 7,072 |  |  | $ | 1,549 |  |  | $ | 139,899 |
Maturity distribution of debt securities classified as available-for-sale | The maturity distribution of the fair value, which is the net carrying amount, of the debt securities classified as available-for-sale at June 30, 2012, is summarized as follows:
June 30, 2012 |  | Fair Value |
Within one year |  | $ | 250 |
After one but within five years |  |  | 14,855 |
After five but within ten years |  |  | 35,483 |
After ten years |  |  | 39,897 |
|  |  | 90,485 |
Mortgage-backed securities |  |  | 37,641 |
Total |  | $ | 128,126 |
Fair value and unrealized losses of investment securities in continuous unrealized loss position | The fair value and gross unrealized losses of investment securities available-for-sale with unrealized losses for which an other-than-temporary impairment ("OTTI") has not been recognized at June 30, 2012 and December 31, 2011, aggregated by investment category and length of time that the individual securities have been in a continuous unrealized loss position, are summarized as follows:
|  | Less Than 12 Months |  |  | 12 Months or More |  |  | Total |
June 30, 2012 |  | Fair Value |  |  | Unrealized Losses |  |  | Fair Value |  |  | Unrealized Losses |  |  | Fair Value |  |  | Unrealized Losses |
U.S. Government-sponsored enterprises |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
State and municipals: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Taxable |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax-Exempt |  | $ | 1,176 |  |  | $ | 6 |  |  | $ | 300 |  |  | $ | 3 |  |  | $ | 1,476 |  |  | $ | 9 |
Corporate debt securities |  |  |  |  |  |  |  |  |  |  | 2,417 |  |  |  | 594 |  |  |  | 2,417 |  |  |  | 594 |
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agencies |  |  | 3,538 |  |  |  | 13 |  |  |  | 2,801 |  |  |  | 17 |  |  |  | 6,339 |  |  |  | 30 |
U.S. Government-sponsored enterprises |  |  | 9,294 |  |  |  | 89 |  |  |  | 2,651 |  |  |  | 27 |  |  |  | 11,945 |  |  |  | 116 |
Equity securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common |  |  |  |  |  |  |  |  |  |  | 98 |  |  |  | 39 |  |  |  | 98 |  |  |  | 39 |
Total |  | $ | 14,008 |  |  | $ | 108 |  |  | $ | 8,267 |  |  | $ | 680 |  |  | $ | 22,275 |  |  | $ | 788 |
|  | Less Than 12 Months |  |  | 12 Months or More |  |  | Total |
December 31, 2011 |  | Fair Value |  |  | Unrealized Losses |  |  | Fair Value |  |  | Unrealized Losses |  |  | Fair Value |  |  | Unrealized Losses |
U.S. Government-sponsored enterprises |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
State and municipals: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Taxable |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax-Exempt |  | $ | 1,142 |  |  | $ | 39 |  |  | $ | 2,859 |  |  | $ | 185 |  |  | $ | 4,001 |  |  | $ | 224 |
Corporate debt securities |  |  | 970 |  |  |  | 61 |  |  |  | 2,130 |  |  |  | 881 |  |  |  | 3,100 |  |  |  | 942 |
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agencies |  |  | 10,785 |  |  |  | 100 |  |  |  |  |  |  |  |  |  |  |  | 10,785 |  |  |  | 100 |
U.S. Government-sponsored enterprises |  |  | 21,825 |  |  |  | 199 |  |  |  |  |  |  |  |  |  |  |  | 21,825 |  |  |  | 199 |
Equity securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common |  |  |  |  |  |  |  |  |  |  | 195 |  |  |  | 84 |  |  |  | 195 |  |  |  | 84 |
Total |  | $ | 34,722 |  |  | $ | 399 |  |  | $ | 5,184 |  |  | $ | 1,150 |  |  | $ | 39,906 |  |  | $ | 1,549 |

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- Definition Tabular disclosure of the reconciliation of available-for-sale securities from cost basis to fair value. + References No definition available. + Details
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- Definition For all investments in an unrealized loss position, including those for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27290-111563 + Details
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