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SECURITIES (Tables) | 12 Months Ended
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Dec. 31, 2013
Investments Debt And Equity Securities [Abstract] |
Summary of Securities Held for Investment and Securities Available for Sale | The following table summarizes securities held for investment and securities available for sale:
|  | December 31, |
|  | 2013 |  |  | 2012 |
|  | (Dollars in thousands) |
Held for investment at cost (fair value: $12,094 and $16,689, respectively) |  | $ | 11,986 |  |  | $ | 16,416 |
Available for sale, at fair value |  |  | 515,641 |  |  |  | 546,126 |
Total |  | $ | 527,627 |  |  | $ | 562,542 |
Summary of Amortized Cost and Estimated Fair Values of Securities Held for Investment | The following table summarizes the amortized cost and estimated fair values of securities held for investment:
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Estimated Fair Value |
|  | (Dollars in thousands) |
December 31, 2013 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury and other Federal agencies |  | $ | 607 |  |  | $ | 48 |  |  | $ | — |  |  | $ | 655 |
States and political subdivisions |  |  | 11,379 |  |  |  | 67 |  |  |  | (7 | ) |  |  | 11,439 |
Total |  | $ | 11,986 |  |  | $ | 115 |  |  | $ | (7 | ) |  | $ | 12,094 |
December 31, 2012 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury and other Federal agencies |  | $ | 781 |  |  | $ | 59 |  |  | $ | — |  |  | $ | 840 |
States and political subdivisions |  |  | 15,635 |  |  |  | 222 |  |  |  | (8 | ) |  |  | 15,849 |
Total |  | $ | 16,416 |  |  | $ | 281 |  |  | $ | (8 | ) |  | $ | 16,689 |
Summary of Amortized Cost and Estimated Fair Values of Securities Available for Sale | The following table summarizes the amortized cost and estimated fair values of securities available for sale:
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Estimated Fair Value |
|  | (Dollars in thousands) |
December 31, 2013 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. treasuries |  | $ | 29,946 |  |  | $ | — |  |  | $ | (85 | ) |  | $ | 29,861 |
U.S. Federal agencies |  |  | 386,391 |  |  |  | 1,399 |  |  |  | (505 | ) |  |  | 387,285 |
Mortgage backed securities (1) |  |  | 32,057 |  |  |  | 625 |  |  |  | (4 | ) |  |  | 32,678 |
States and political subdivisions |  |  | 49,116 |  |  |  | 1,290 |  |  |  | (72 | ) |  |  | 50,334 |
Other securities (2) |  |  | 12,121 |  |  |  | 3,503 |  |  |  | (141 | ) |  |  | 15,483 |
Total |  | $ | 509,631 |  |  | $ | 6,817 |  |  | $ | (807 | ) |  | $ | 515,641 |
December 31, 2012 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Federal agencies |  | $ | 452,554 |  |  | $ | 3,654 |  |  | $ | (164 | ) |  | $ | 456,044 |
Mortgage backed securities (1) |  |  | 19,100 |  |  |  | 825 |  |  |  | (1 | ) |  |  | 19,924 |
States and political subdivisions |  |  | 53,912 |  |  |  | 2,875 |  |  |  | (20 | ) |  |  | 56,767 |
Other securities (2) |  |  | 10,843 |  |  |  | 2,562 |  |  |  | (14 | ) |  |  | 13,391 |
Total |  | $ | 536,409 |  |  | $ | 9,916 |  |  | $ | (199 | ) |  | $ | 546,126 |
(1) | Primarily consists of FHLMC, FNMA, GNMA and mortgage backed securities through U.S. agencies.
(2) | Primarily consists of equity securities.
Maturity of Securities | The maturities of securities held for investment and available for sale are summarized in the following table using contractual maturities.
|  | December 31, |
|  | 2013 |  |  | 2012 |
|  | Amortized Cost |  |  | Estimated Fair Value |  |  | Amortized Cost |  |  | Estimated Fair Value |
|  | (Dollars in thousands) |
Held for Investment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contractual maturity of debt securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Within one year |  | $ | 3,640 |  |  | $ | 3,649 |  |  | $ | 4,180 |  |  | $ | 4,227 |
After one year but within five years |  |  | 7,277 |  |  |  | 7,321 |  |  |  | 10,360 |  |  |  | 10,496 |
After five years but within ten years |  |  | 837 |  |  |  | 865 |  |  |  | 1,400 |  |  |  | 1,438 |
After ten years |  |  | 232 |  |  |  | 259 |  |  |  | 476 |  |  |  | 528 |
Total |  | $ | 11,986 |  |  | $ | 12,094 |  |  | $ | 16,416 |  |  | $ | 16,689 |
Available for Sale |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contractual maturity of debt securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Within one year |  | $ | 208,625 |  |  | $ | 209,065 |  |  | $ | 144,666 |  |  | $ | 145,027 |
After one year but within five years |  |  | 167,554 |  |  |  | 168,210 |  |  |  | 256,890 |  |  |  | 259,475 |
After five years but within ten years |  |  | 27,195 |  |  |  | 27,797 |  |  |  | 36,764 |  |  |  | 38,306 |
After ten years |  |  | 97,542 |  |  |  | 98,551 |  |  |  | 90,626 |  |  |  | 93,293 |
Total debt securities |  |  | 500,916 |  |  |  | 503,623 |  |  |  | 528,946 |  |  |  | 536,101 |
Equity securities |  |  | 8,715 |  |  |  | 12,018 |  |  |  | 7,463 |  |  |  | 10,025 |
Total |  | $ | 509,631 |  |  | $ | 515,641 |  |  | $ | 536,409 |  |  | $ | 546,126 |
Proceeds from Sales and Realized Securities Gains and Losses, on Available for Sale Securities | The following is a detail of proceeds from sales and realized securities gains and losses, on available for sale securities:
|  | Year Ended December 31, |
|  | 2013 |  |  | 2012 |  |  | 2011 |
|  | (Dollars in thousands) |
Proceeds |  | $ | 521 |  |  | $ | 6,025 |  |  | $ | 61,668 |
Gross gains realized |  |  | 456 |  |  |  | 5,575 |  |  |  | 1,940 |
Gross losses realized |  |  | 36 |  |  |  | 660 |  |  |  | 342 |
Company's Book Value of Pledged Securities | The following table is a summary of the Company’s book value of securities that were pledged as collateral for public funds on deposit, repurchase agreements and for other purposes as required or permitted by law:
|  | Year Ended December 31, |
|  | 2013 |  |  | 2012 |
|  | (Dollars in thousands) |
Book value of pledged securities |  | $ | 443,835 |  |  | $ | 499,244 |
Summary of Securities with Unrealized Losses, Segregated by Duration of Unrealized Loss | The following table summarizes securities with unrealized losses, segregated by the duration of the unrealized loss, at December 31, 2013 and 2012 respectively:
|  | Less than 12 Months |  |  | More than 12 Months |  |  | Total |
|  | Estimated Fair Value |  |  | Unrealized Losses |  |  | Estimated Fair Value |  |  | Unrealized Losses |  |  | Estimated Fair Value |  |  | Unrealized Losses |
|  | (Dollars in thousands) |
December 31, 2013 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Held for Investment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Federal agencies |  | $ | 1 |  |  | $ | — |  |  | $ | 1 |  |  | $ | — |  |  | $ | 2 |  |  | $ | — |
States and political subdivisions |  |  | — |  |  |  | — |  |  |  | 1,328 |  |  |  | 7 |  |  |  | 1,328 |  |  |  | 7 |
Total |  | $ | 1 |  |  | $ | — |  |  | $ | 1,329 |  |  | $ | 7 |  |  | $ | 1,330 |  |  | $ | 7 |
Available for Sale |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. treasuries |  | $ | 29,861 |  |  | $ | 85 |  |  | $ | — |  |  | $ | — |  |  | $ | 29,861 |  |  | $ | 85 |
U.S. Federal agencies |  |  | 79,477 |  |  |  | 250 |  |  |  | 150,188 |  |  |  | 259 |  |  |  | 229,665 |  |  |  | 509 |
States and political subdivisions |  |  | 2,459 |  |  |  | 72 |  |  |  | — |  |  |  | — |  |  |  | 2,459 |  |  |  | 72 |
Other |  |  | 160 |  |  |  | 141 |  |  |  | — |  |  |  | — |  |  |  | 160 |  |  |  | 141 |
Total |  | $ | 111,957 |  |  | $ | 548 |  |  | $ | 150,188 |  |  | $ | 259 |  |  | $ | 262,145 |  |  | $ | 807 |
December 31, 2012 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Held for Investment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Federal agencies |  | $ | 1 |  |  | $ | — |  |  | $ | 5 |  |  | $ | — |  |  | $ | 6 |  |  | $ | — |
States and political subdivisions |  |  | 1,442 |  |  |  | 8 |  |  |  | — |  |  |  | — |  |  |  | 1,442 |  |  |  | 8 |
Total |  | $ | 1,443 |  |  | $ | 8 |  |  | $ | 5 |  |  | $ | — |  |  | $ | 1,448 |  |  | $ | 8 |
Available for Sale |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Federal agencies |  | $ | 45,905 |  |  | $ | 54 |  |  | $ | 125,868 |  |  | $ | 111 |  |  | $ | 171,773 |  |  | $ | 165 |
States and political subdivisions |  |  | 1,545 |  |  |  | 18 |  |  |  | 888 |  |  |  | 2 |  |  |  | 2,433 |  |  |  | 20 |
Other |  |  | 3,366 |  |  |  | 14 |  |  |  | — |  |  |  | — |  |  |  | 3,366 |  |  |  | 14 |
Total |  | $ | 50,816 |  |  | $ | 86 |  |  | $ | 126,756 |  |  | $ | 113 |  |  | $ | 177,572 |  |  | $ | 199 |

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