CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Statement of Financial Position [Abstract]
Mortgage loans held for sale, amortized cost	$ 27,274	$ 48,370
Securities available for sale, amortized cost	336,954	363,408
Securities held to maturity, fair value	$ 37,804	$ 41,420
Common stock, par value	$ 0.0625	$ 0.0625
Common stock, shares authorized	30,000,000	30,000,000
Common stock, shares issued	16,425,442	16,379,771

This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

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