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INVESTMENT SECURITIES (Tables) | 3 Months Ended
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Mar. 31, 2013
Investment Securities [Abstract] |
Amortized cost and related market value of investment securities available-for-sale | Investment Portfolio Composition. The amortized cost and related market value of investment securities available-for-sale were as follows:
|  | March 31, 2013
(Dollars in Thousands) |  | Amortized Cost |  | Unrealized Gains |  | Unrealized Losses |  | Market Value
U.S. Government Treasury |  | $ | 94,550 |  |  | $ | 355 |  |  | $ | — |  |  | $ | 94,905 |
U.S. Government Agency |  |  | 52,178 |  |  |  | 216 |  |  |  | 22 |  |  |  | 52,372 |
States and Political Subdivisions |  |  | 82,860 |  |  |  | 172 |  |  |  | 38 |  |  |  | 82,994 |
Mortgage-Backed Securities |  |  | 66,167 |  |  |  | 890 |  |  |  | 40 |  |  |  | 67,017 |
Other Securities(1) |  |  | 10,814 |  |  |  | — |  |  |  | 600 |  |  |  | 10,214 |
Total Investment Securities |  | $ | 306,569 |  |  | $ | 1,633 |  |  | $ | 700 |  |  | $ | 307,502 |
|  | December 31, 2012
(Dollars in Thousands) |  | Amortized Cost |  | Unrealized Gains |  | Unrealized Losses |  | Market Value
U.S. Government Treasury |  | $ | 96,745 |  |  | $ | 504 |  |  | $ | — |  |  | $ | 97,249 |
U.S. Government Agency |  |  | 51,468 |  |  |  | 221 |  |  |  | 25 |  |  |  | 51,664 |
States and Political Subdivisions |  |  | 79,818 |  |  |  | 124 |  |  |  | 63 |  |  |  | 79,879 |
Mortgage-Backed Securities |  |  | 56,217 |  |  |  | 805 |  |  |  | 40 |  |  |  | 56,982 |
Other Securities(1) |  |  | 11,811 |  |  |  | — |  |  |  | 600 |  |  |  | 11,211 |
Total Investment Securities |  | $ | 296,059 |  |  | $ | 1,654 |  |  | $ | 728 |  |  | $ | 296,985 |
| (1) | Includes Federal Home Loan Bank and Federal Reserve Bank stock recorded at cost of $5.4 million and $4.8 million, respectively, at March 31, 2013 and $6.4 million and $4.8 million, respectively, at December 31, 2012.
Maturity Distribution | Maturity Distribution. As of March 31, 2013, the Company’s investment securities had the following maturity distribution based on contractual maturity. Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations. Mortgage-backed securities and certain amortizing U.S. government agency securities are shown separately since they are not due at a certain maturity date.
(Dollars in Thousands) |  | Amortized Cost |  | Market Value
Due in one year or less |  | $ | 85,517 |  |  | $ | 85,799 |
Due after one through five years |  |  | 106,857 |  |  |  | 107,078 |
No Maturity |  |  | 10,814 |  |  |  | 10,214 |
Mortgage-Backed Securities |  |  | 66,167 |  |  |  | 67,017 |
U.S. Government Agency |  |  | 37,214 |  |  |  | 37,394 |
Total Investment Securities |  | $ | 306,569 |  |  | $ | 307,502 |
Investment securities with unrealized losses | Other Than Temporarily Impaired Securities. The following tables summarize the investment securities with unrealized losses aggregated by major security type and length of time in a continuous unrealized loss position:
|  |  |  | March 31, 2013 |  |
|  | Less Than 12 Months |  | Greater Than 12 Months |  | Total
(Dollars in Thousands) |  | Market Value |  | Unrealized Losses |  | Market Value |  | Unrealized Losses |  | Market Value |  | Unrealized Losses
U.S. Government Treasury |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
U.S. Government Agency |  |  | 21,891 |  |  |  | 19 |  |  |  | 762 |  |  |  | 3 |  |  |  | 22,653 |  |  |  | 22 |
States and Political Subdivisions |  |  | 11,373 |  |  |  | 30 |  |  |  | 6,179 |  |  |  | 8 |  |  |  | 17,552 |  |  |  | 38 |
Mortgage-Backed Securities |  |  | 4,711 |  |  |  | 20 |  |  |  | 1,532 |  |  |  | 20 |  |  |  | 6,243 |  |  |  | 40 |
Other Securities |  |  | — |  |  |  | — |  |  |  | 600 |  |  |  | 600 |  |  |  | 600 |  |  |  | 600 |
Total Investment Securities |  | $ | 37,975 |  |  | $ | 69 |  |  | $ | 9,073 |  |  | $ | 631 |  |  | $ | 47,048 |  |  | $ | 700 |
|  |  |  | December 31, 2012 |  |
|  | Less Than 12 Months |  | Greater Than 12 Months |  | Total
(Dollars in Thousands) |  | Market Value |  | Unrealized Losses |  | Market Value |  | Unrealized Losses |  | Market Value |  | Unrealized Losses
U.S. Government Treasury |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
U.S. Government Agency |  |  | 8,464 |  |  |  | 23 |  |  |  | 790 |  |  |  | 2 |  |  |  | 9,254 |  |  |  | 25 |
States and Political Subdivisions |  |  | 30,302 |  |  |  | 55 |  |  |  | 5,028 |  |  |  | 8 |  |  |  | 35,330 |  |  |  | 63 |
Mortgage-Backed Securities |  |  | 3,921 |  |  |  | 15 |  |  |  | 1,624 |  |  |  | 25 |  |  |  | 5,545 |  |  |  | 40 |
Other Securities |  |  | — |  |  |  | — |  |  |  | 600 |  |  |  | 600 |  |  |  | 600 |  |  |  | 600 |
Total Investment Securities |  | $ | 42,687 |  |  | $ | 93 |  |  | $ | 8,042 |  |  | $ | 635 |  |  | $ | 50,729 |  |  | $ | 728 |

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- Definition Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities. + 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27198-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 03-1 -Paragraph 21 -Subparagraph a, b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62557-112803 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 17 -Subparagraph a, b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27337-111563 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 19, 20, 21 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27161-111563 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62586-112803 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27357-111563 + 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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