Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash flows from operating activities:
Net income	$ 6,149	$ 6,196
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,051	874
Net amortization of premiums on securities	1,328	1,300
Provision for loan losses	2,709	1,385
Share-based compensation	102	142
Deferred income tax expense	1,702	344
Proceeds from sale of loans held for sale	10,288	14,350
Originations of loans held for sale	(10,712)	(13,660)
Increase in company owned life insurance	(415)	(426)
Net gain on sale of loans held for sale	(200)	(333)
Net gain on disposal of investment securities	(892)	(331)
Impairment charges on investment securities		91
Net gain on sale and disposal of other assets	(1)	(6)
Decrease in other assets	2,192	3,690
Decrease in other liabilities	(857)	(1,354)
Net cash provided by operating activities	12,444	12,262
Cash flows from investing activities:
Available for sale	(124,157)	(99,333)
Held to maturity	(1,076)	(3,256)
Proceeds from principal payments, maturities and calls on investment securities:
Available for sale	45,067	44,992
Held to maturity	1,483	2,854
Proceeds from sales of securities available for sale	952	360
Net loan originations	(13,570)	(37,205)
Purchases of company owned life insurance	(7)	(8)
Proceeds from sales of other assets	239	332
Purchases of premises and equipment	(1,712)	(661)
Net cash used in investing activities	(92,781)	(91,925)
Cash flows from financing activities:
Net increase in deposits	147,703	134,970
Net decrease in short-term borrowings	(40,186)	(33,351)
Repurchase of preferred stock	(53)
Purchase of common stock for treasury	(229)	(525)
Proceeds from stock options exercised	13	26
Excess tax benefit on share-based compensation	6	130
Cash dividends paid to preferred shareholders	(368)	(369)
Cash dividends paid to common shareholders	(2,194)	(1,776)
Net cash provided by financing activities	104,692	99,105
Net increase in cash and cash equivalents	24,355	19,442
Cash and cash equivalents, beginning of period	60,436	57,583
Cash and cash equivalents, end of period	84,791	77,025
Supplemental information
Cash paid for interest	1,812	2,903
Cash paid for income taxes	140	60
Noncash investing and financing activities:
Real estate and other assets acquired in settlement of loans	410	71
Accrued and declared unpaid dividends	2,839	2,149
(Decrease) increase in net unsettled security purchases	$ (43,978)	$ 21,632