Note 8 - Loans & Allowance for Loan Losses (Details) - Impaired Loans (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Commercial:
Recorded Investment (after charge-offs)	$ 21,048	$ 23,771
Unpaid Principal Balance	22,266	24,975
Commercial:
Recorded investment (after charge-offs)	7,516	8,533
Unpaid principal balance	8,424	9,302
Related Allowance	2,277	2,701
Commercial:
Recorded investment (after charge-offs)	28,564	32,304
Unpaid principal balance	30,690	34,277
Related Allowance	2,277	2,701
Average recorded investment	29,540	32,543
Interest income recognized	468	847
Commercial:Commercial and Industrial [Member]
Commercial:
Recorded Investment (after charge-offs)	3,383	5,241
Unpaid Principal Balance	3,735	5,477
Commercial:
Recorded investment (after charge-offs)	2,591	2,512
Unpaid principal balance	2,882	2,687
Related Allowance	1,030	1,309
Commercial:
Recorded investment (after charge-offs)	5,974	7,753
Unpaid principal balance	6,617	8,164
Related Allowance	1,030	1,309
Average recorded investment	6,487	7,657
Interest income recognized	31	74
Commercial:Construction [Member]
Commercial:
Recorded Investment (after charge-offs)	1,537	3,990
Unpaid Principal Balance	1,806	4,170
Commercial:
Recorded investment (after charge-offs)	1,537	3,990
Unpaid principal balance	1,806	4,170
Average recorded investment	3,675	4,972
Interest income recognized	45	111
Commercial:Secured by Commercial Real Estate [Member]
Commercial:
Recorded Investment (after charge-offs)	12,779	11,392
Unpaid Principal Balance	13,292	12,128
Commercial:
Recorded investment (after charge-offs)	2,087	3,539
Unpaid principal balance	2,522	4,023
Related Allowance	357	619
Commercial:
Recorded investment (after charge-offs)	14,866	14,931
Unpaid principal balance	15,814	16,151
Related Allowance	357	619
Average recorded investment	13,709	14,883
Interest income recognized	309	541
Commercial Secured By Residential Real Estate [Member]
Commercial:
Recorded Investment (after charge-offs)	1,059	897
Unpaid Principal Balance	1,087	912
Commercial:
Recorded investment (after charge-offs)	2,469	1,946
Unpaid principal balance	2,628	2,024
Related Allowance	756	543
Commercial:
Recorded investment (after charge-offs)	3,528	2,843
Unpaid principal balance	3,715	2,936
Related Allowance	756	543
Average recorded investment	3,036	2,439
Interest income recognized	25	47
State And Political Subdivisions [Member]
Commercial:
Recorded Investment (after charge-offs)	1,697	1,849
Unpaid Principal Balance	1,697	1,850
Commercial:
Recorded investment (after charge-offs)	1,697	1,849
Unpaid principal balance	1,697	1,850
Average recorded investment	1,798	1,478
Interest income recognized	53	64
Indirect Lease Financing [Member]
Commercial:
Recorded Investment (after charge-offs)	22	37
Unpaid Principal Balance	29	44
Commercial:
Recorded investment (after charge-offs)	29	61
Unpaid principal balance	31	67
Related Allowance	6	13
Commercial:
Recorded investment (after charge-offs)	51	98
Unpaid principal balance	60	111
Related Allowance	6	13
Average recorded investment	69	86
Retail:1-4 Family Residential Mortgages [Member]
Commercial:
Recorded Investment (after charge-offs)	363	181
Unpaid Principal Balance	385	198
Commercial:
Recorded investment (after charge-offs)	273	275
Unpaid principal balance	285	287
Related Allowance	61	90
Commercial:
Recorded investment (after charge-offs)	636	456
Unpaid principal balance	670	485
Related Allowance	61	90
Average recorded investment	465	518
Interest income recognized	4	5
Retail Home Equity Loans And Lines [Member]
Commercial:
Recorded Investment (after charge-offs)	208	184
Unpaid Principal Balance	235	196
Commercial:
Recorded investment (after charge-offs)	67	200
Unpaid principal balance	76	214
Related Allowance	67	127
Commercial:
Recorded investment (after charge-offs)	275	384
Unpaid principal balance	311	410
Related Allowance	67	127
Average recorded investment	301	510
Interest income recognized	$ 1	$ 5