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	$ 11,043	$ 10,662	$ 10,350
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of premises and equipment	1,180	1,081	914
Amortization of core deposit intangible			67
Provision for loan losses	2,395	2,327	3,207
Net securities gains	(2,689)	(2,127)	(1,521)
Other-than-temporary impairment	2,219	898	1,454
Net amortization (accretion) of bond premiums and discounts	1,636	1,193	(965)
Deferred tax benefit	(477)	(211)	(1,742)
Recognition of stock based expense	99	217	129
Proceeds from sale of mortgages held for sale		846	29,898
Origination of mortgage loans held for sale		(829)	(29,842)
Net gains on sale of mortgage loans held for sale		(26)	(446)
Net gains on sale of other real estate owned	(20)
Net change in other assets	147	(214)	(6,047)
Net change in other liabilities	606	(81)	1,327
Net cash provided by operating activities	16,139	13,736	6,783
Cash flows from investing activities:
Purchases of securities available for sale	(137,215)	(158,584)	(184,554)
Proceeds from maturities, calls and principal paydowns of mortgage-backed securities	73,737	116,790	70,266
Proceeds from sales of securities available for sale	48,468	31,070	62,357
Net increase in Federal Home Loan Bank stock			(1,272)
Net loans made to customers	(33,217)	(33,268)	(37,148)
Proceeds from sale of other real estate owned	167	854	83
Capital expenditures	(3,765)	(2,659)	(1,987)
Net cash used in investing activities	(51,825)	(45,797)	(92,255)
Cash flows from financing activities:
Net increase in deposits	14,562	67,155	62,980
Net (decrease) increase in securities sold under repurchase agreements and fed funds purchased	(5,679)	9,665	(726)
(Paydowns of) proceeds from Federal Reserve borrowings		(20,000)	20,000
Proceeds from Federal Home Loan Bank advances	84,000	28,750	47,490
Repayments of Federal Home Loan Bank advances	(58,052)	(30,030)	(79,038)
Proceeds from issuance of common stock		1,941	20,412
Net proceeds from issuance of preferred stock and stock warrants			18,520
Purchase of treasury stock	(623)	(275)
Purchases of preferred stock and warrants		(19,152)	(144)
Proceeds from stock option exercises, including excess tax benefits	1,611	1,083	552
Payments of dividends	(4,228)	(4,093)	(3,784)
Net cash provided by financing activities	31,591	35,044	86,262
Net increase in cash and cash equivalents	(4,095)	2,983	790
Cash and cash equivalents at beginning of period	12,815	9,832	9,042
Cash and cash equivalents at end of period	8,720	12,815	9,832
Supplemental disclosures of cash flow information:
Interest	16,768	19,601	21,191
Income taxes	5,087	4,826	5,954
Schedule of noncash investing activities:
Transfers from loans to other real estate owned	$ 2,210	$ 656	$ 854