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Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified | Sep. 30, 2014 | Dec. 31, 2013
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Consolidated Balance Sheets [Abstract] |  |
Securities available for sale, amortized cost | $ 460,832 | $ 461,635
Capital stock, par value | $ 2 | $ 2
Capital stock, shares authorized | 15,000,000 | 10,000,000
Capital stock, shares issued | 6,788,407 | 4,525,635
Prior service cost and unamortized net actuarial losses on employee benefit plans, tax | (185) | (192)
Net unrealized appreciation on securities available for sale, tax | 1,819 | (4,150)
Portion of OTTI attributable to non-credit losses, tax | 255 | 252
Net unrealized appreciation on derivative instruments, tax | $ 83 | $ 0
Treasury stock, shares | 852,831 | 879,840

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