Consolidated Balance Sheets (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Securities available for sale at fair value, pledged (in Dollars)	$ 174,240	$ 146,429
Securities held to maturity, pledged (in Dollars)	136,109	206,282
Securities held to maturity, fair value (in Dollars)	$ 403,218	$ 425,775
Common stock par value (in Dollars per share)	$ 1	$ 1
Common stock, shares authorized (in Shares)	50,000,000	50,000,000
Common stock, shares issued (in Shares)	35,263,768	35,225,110	31,138,545
Common shares in treasury at cost, shares (in Shares)	4,307,972	4,300,278	4,297,782

The fair value of available-for-sale securities that serve as collateral for borrowings.

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Face amount or stated value of common stock per share; generally not indicative of the fair market value per share.

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