Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash flows from operating activities:
Net income	$ 9,636	$ 8,652
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of premises and equipment	905	891
Provision for loan losses	1,302	1,850
Net securities gains	(1,834)	(2,313)
Other-than-temporary impairment	781	1,726
Net amortization of bond premiums and discounts	2,869	1,039
Recognition of stock based expense	180	77
Net change in other assets	(390)	785
Net change in other liabilities	2,215	(183)
Net cash provided by operating activities	15,664	12,524
Cash flows from investing activities:
Net cash received in acquisition	1,197
Purchases of securities available for sale	(134,170)	(113,677)
Proceeds from maturities, calls and principal paydowns of mortgage-backed securities	67,157	52,377
Proceeds from sales of securities available for sale	34,664	40,457
Purchase of FHLB stock	(1,351)
Net loans made to customers	(48,197)	(16,705)
Proceeds from sale of other real estate owned	356	116
Capital expenditures	(3,597)	(2,216)
Net cash used in investing activities	(83,941)	(39,648)
Cash flows from financing activities:
Net increase in deposits	52,217	53,766
Net increase (decrease) in securities sold under repurchase agreements and fed funds purchased	3,988	(750)
Proceeds from Federal Home Loan Bank advances	53,999	26,000
Repayments of Federal Home Loan Bank advances	(38,213)	(54,302)
Purchase of treasury stock		(304)
Proceeds from stock option exercises, including excess tax benefits	999	1,587
Payments of dividends	(3,388)	(3,142)
Net cash provided by financing activities	69,602	22,855
Net decrease in cash and cash equivalents	1,325	(4,269)
Cash and cash equivalents at beginning of period	8,720	12,815
Cash and cash equivalents at end of period	10,045	8,546
Supplemental disclosures of cash flow information:
Interest	10,574	12,923
Income taxes	2,988	3,077
Schedule of noncash investing activities:
Transfers from loans to other real estate owned	912	960
Acquisitions:
Fair value of noncash assets acquired	41,576
Fair value of liabilities assumed	$ (42,773)