Condensed Consolidated Statement of Stockholders' Equity (USD $) In Thousands	Total	Preferred Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]
Beginning Balances at Dec. 31, 2012	$ 158,968	$ 12,500	$ 31,965	$ 105,402	$ 9,101
Net income	15,761			15,761
Other comprehensive income (loss), net of tax	(8,536)				(8,536)
Amortization of unearned compensation	207		207
Exercise of stock options	34		34
Stock option expense	31		31
Cash dividends on preferred stock (3.29%)	(308)			(308)
Cash dividends on common stock ($.31 per share)	(2,698)			(2,698)
Ending Balances at Sep. 30, 2013	$ 163,459	$ 12,500	$ 32,237	$ 118,157	$ 565