Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Cash flows from operating activities:
Net income	$ 22,799	$ 21,287	$ 14,441
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	3,466	3,537	4,067
Net amortization of premiums on securities	5,722	3,005	2,587
Provision for loan losses	7,780	6,687	7,702
Share-based compensation	1,105	1,031	854
Deferred income tax expense	6,510	2,468	7,470
Proceeds from sale of loans held for sale	32,839	42,195	90,290
Originations of loans held for sale	(31,231)	(44,262)	(88,999)
Net gain on sale of loans held for sale	(880)	(650)	(699)
Increase in company owned life insurance	(1,424)	(1,107)	(1,096)
Net gain on sales and calls of investment securities	(3,003)	(169)	(3,429)
Impairment charges on investment securities	18	594	4,666
Net (gain) loss on sale and disposal of other assets	(67)	203	(180)
Loss on extinguishment of debt	1,083
Increase in other assets	(7,756)	(353)	(8,773)
(Decrease) increase in other liabilities	(4,943)	961	(6,633)
Net cash provided by operating activities	32,018	35,427	22,268
Cash flows from investing activities:
Available for sale	(158,013)	(430,952)	(602,259)
Held to maturity	(17,188)	(19,791)	(29,280)
Proceeds from principal payments, maturities and calls on investment securities:
Available for sale	168,976	219,974	353,545
Held to maturity	21,986	30,885	46,891
Proceeds from sales and calls of securities available for sale	44,514	122,090	224,928
Net increase in loans, excluding sales	(157,110)	(89,507)	(165,716)
Loans sold	13,033
Purchases of company owned life insurance	(18,079)	(79)	(79)
Proceeds from sales of other assets	705	611	1,709
Purchases of premises and equipment	(3,678)	(2,438)	(1,959)
Net cash used in investing activities	(104,854)	(169,207)	(172,220)
Cash flows from financing activities:
Net increase in deposits	48,709	139,935	109,692
Net increase in short-term borrowings	73,588	17,567	36,078
Repayments of long-term borrowings	(26,767)	(20,080)	(508)
Proceeds from issuance of common stock, net of issuance costs	43,127
Purchases of common stock for treasury	(215)	(69)
Repurchase of Series A 3% preferred stock	(3)
Issuance costs of Series A preferred stock			(68)
Repurchase of warrant issued to U.S. Treasury	(2,080)
Redemption of Series A preferred stock	(37,447)
Repurchase of Series B-1 8.48% preferred stock	(99)
Proceeds from stock options exercised	91	216	15
Excess tax benefit on share-based compensation	21
Cash dividends paid to preferred shareholders	(2,118)	(3,358)	(3,160)
Cash dividends paid to common shareholders	(5,446)	(4,332)	(4,325)
Net cash provided by financing activities	91,361	129,879	137,724
Net increase (decrease) in cash and cash equivalents	18,525	(3,901)	(12,228)
Cash and cash equivalents, beginning of period	39,058	42,959	55,187
Cash and cash equivalents, end of period	$ 57,583	$ 39,058	$ 42,959