Note 8 - Loans & Allowance for Loan Losses (Details) - Allowance for Loan Losses (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	$ 9,431,000	$ 9,467,000	$ 9,772,000	$ 9,241,000
Provision for (credit to) loan losses	150,000	300,000	250,000	600,000
Charge-offs	(634,000)	(68,000)	(1,177,000)	(311,000)
Recoveries	48,000	18,000	150,000	187,000
Balance	8,995,000	9,717,000	8,995,000	9,717,000
Commercial:Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	1,994,000	3,467,000	2,505,000	2,959,000
Provision for (credit to) loan losses	131,000	(577,000)	(395,000)	(57,000)
Charge-offs	(68,000)	(27,000)	(68,000)	(101,000)
Recoveries	7,000	1,000	22,000	63,000
Balance	2,064,000	2,864,000	2,064,000	2,864,000
Commercial:Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	242,000	353,000	209,000	556,000
Provision for (credit to) loan losses	38,000	(58,000)	71,000	(261,000)
Balance	280,000	295,000	280,000	295,000
Commercial:Secured by Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	3,916,000	3,190,000	3,795,000	3,124,000
Provision for (credit to) loan losses	(1,000)	419,000	119,000	423,000
Charge-offs	(491,000)		(491,000)
Recoveries		14,000	1,000	76,000
Balance	3,424,000	3,623,000	3,424,000	3,623,000
Commercial Secured By Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	1,437,000	811,000	1,230,000	746,000
Provision for (credit to) loan losses	238,000	272,000	736,000	423,000
Charge-offs			(336,000)	(86,000)
Recoveries	10,000		55,000
Balance	1,685,000	1,083,000	1,685,000	1,083,000
State And Political Subdivisions [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	277,000	222,000	260,000	195,000
Provision for (credit to) loan losses	(5,000)	39,000	12,000	66,000
Charge-offs	(1,000)		(1,000)
Balance	271,000	261,000	271,000	261,000
Loans To Depository Institutions [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	10,000	20,000	15,000	20,000
Provision for (credit to) loan losses	(6,000)	(5,000)	(11,000)	(5,000)
Balance	4,000	15,000	4,000	15,000
Indirect Lease Financing [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	156,000	268,000	168,000	312,000
Provision for (credit to) loan losses	(64,000)	(36,000)	(91,000)	(83,000)
Charge-offs		(15,000)	(1,000)	(38,000)
Recoveries	11,000	1,000	27,000	27,000
Balance	103,000	218,000	103,000	218,000
Retail:1-4 Family Residential Mortgages [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	289,000	300,000	324,000	249,000
Provision for (credit to) loan losses	(40,000)	3,000	(75,000)	73,000
Charge-offs				(21,000)
Recoveries				2,000
Balance	249,000	303,000	249,000	303,000
Retail Home Equity Loans And Lines [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	664,000	595,000	582,000	625,000
Provision for (credit to) loan losses	(14,000)	(95,000)	234,000	(118,000)
Charge-offs	(53,000)		(225,000)	(19,000)
Recoveries	16,000		22,000	12,000
Balance	613,000	500,000	613,000	500,000
Retail:Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	28,000	18,000	27,000	20,000
Provision for (credit to) loan losses	24,000	33,000	40,000	46,000
Charge-offs	(21,000)	(26,000)	(55,000)	(46,000)
Recoveries	4,000	2,000	23,000	7,000
Balance	35,000	27,000	35,000	27,000
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	418,000	223,000	657,000	435,000
Provision for (credit to) loan losses	(151,000)	305,000	(390,000)	93,000
Balance	$ 267,000	$ 528,000	$ 267,000	$ 528,000