Note 8 - Loans & Allowance for Loan Losses (Details) - Impaired Loans (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
Commercial:
Recorded Investment (after charge-offs)	$ 22,209	$ 23,771
Unpaid Principal Balance	23,761	24,975
Commercial:
Recorded Investment (after charge-offs)	7,793	8,533
Unpaid principal balance with an allowance recorded	8,612	9,302
Related allowance	2,181	2,701
Commercial:
Recorded investment (after charge-offs)	30,002	32,304
Unpaid principal balance	32,373	34,277
Related Allowance	2,181	2,701
Average recorded investment	30,239	32,543
Interest income recognized	291	847
Commercial:Commercial and Industrial [Member]
Commercial:
Recorded Investment (after charge-offs)	4,153	5,241
Unpaid Principal Balance	4,548	5,477
Commercial:
Recorded Investment (after charge-offs)	1,729	2,512
Unpaid principal balance with an allowance recorded	1,902	2,687
Related allowance	652	1,309
Commercial:
Recorded investment (after charge-offs)	5,882	7,753
Unpaid principal balance	6,450	8,164
Related Allowance	652	1,309
Average recorded investment	6,771	7,657
Interest income recognized	12	74
Commercial:Construction [Member]
Commercial:
Recorded Investment (after charge-offs)	2,065	3,990
Unpaid Principal Balance	2,302	4,170
Commercial:
Recorded Investment (after charge-offs)	0	0
Unpaid principal balance with an allowance recorded	0	0
Related allowance	0	0
Commercial:
Recorded investment (after charge-offs)	2,065	3,990
Unpaid principal balance	2,302	4,170
Related Allowance	0	0
Average recorded investment	3,865	4,972
Interest income recognized	28	111
Commercial:Secured by Commercial Real Estate [Member]
Commercial:
Recorded Investment (after charge-offs)	12,339	11,392
Unpaid Principal Balance	13,184	12,128
Commercial:
Recorded Investment (after charge-offs)	3,294	3,539
Unpaid principal balance with an allowance recorded	3,799	4,023
Related allowance	850	619
Commercial:
Recorded investment (after charge-offs)	15,633	14,931
Unpaid principal balance	16,983	16,151
Related Allowance	850	619
Average recorded investment	14,117	14,883
Interest income recognized	197	541
Commercial Secured By Residential Real Estate [Member]
Commercial:
Recorded Investment (after charge-offs)	1,444	897
Unpaid Principal Balance	1,467	912
Commercial:
Recorded Investment (after charge-offs)	2,392	1,946
Unpaid principal balance with an allowance recorded	2,512	2,024
Related allowance	534	543
Commercial:
Recorded investment (after charge-offs)	3,836	2,843
Unpaid principal balance	3,979	2,936
Related Allowance	534	543
Average recorded investment	2,811	2,439
Interest income recognized	17	47
State And Political Subdivisions [Member]
Commercial:
Recorded Investment (after charge-offs)	1,807	1,849
Unpaid Principal Balance	1,807	1,850
Commercial:
Recorded Investment (after charge-offs)	0	0
Unpaid principal balance with an allowance recorded	0	0
Related allowance	0	0
Commercial:
Recorded investment (after charge-offs)	1,807	1,849
Unpaid principal balance	1,807	1,850
Related Allowance	0	0
Average recorded investment	1,826	1,478
Interest income recognized	33	64
Loans To Depository Institutions [Member]
Commercial:
Recorded Investment (after charge-offs)	0	0
Unpaid Principal Balance	0	0
Commercial:
Recorded Investment (after charge-offs)	0	0
Unpaid principal balance with an allowance recorded	0	0
Related allowance	0	0
Commercial:
Recorded investment (after charge-offs)	0	0
Unpaid principal balance	0	0
Related Allowance	0	0
Average recorded investment	0	0
Interest income recognized	0	0
Indirect Lease Financing [Member]
Commercial:
Recorded Investment (after charge-offs)	39	37
Unpaid Principal Balance	44	44
Commercial:
Recorded Investment (after charge-offs)	33	61
Unpaid principal balance with an allowance recorded	35	67
Related allowance	7	13
Commercial:
Recorded investment (after charge-offs)	72	98
Unpaid principal balance	79	111
Related Allowance	7	13
Average recorded investment	78	86
Interest income recognized	0	0
Retail:1-4 Family Residential Mortgages [Member]
Commercial:
Recorded Investment (after charge-offs)	166	181
Unpaid Principal Balance	187	198
Commercial:
Recorded Investment (after charge-offs)	274	275
Unpaid principal balance with an allowance recorded	285	287
Related allowance	67	90
Commercial:
Recorded investment (after charge-offs)	440	456
Unpaid principal balance	472	485
Related Allowance	67	90
Average recorded investment	448	518
Interest income recognized	3	5
Retail Home Equity Loans And Lines [Member]
Commercial:
Recorded Investment (after charge-offs)	196	184
Unpaid Principal Balance	222	196
Commercial:
Recorded Investment (after charge-offs)	71	200
Unpaid principal balance with an allowance recorded	79	214
Related allowance	71	127
Commercial:
Recorded investment (after charge-offs)	267	384
Unpaid principal balance	301	410
Related Allowance	71	127
Average recorded investment	323	510
Interest income recognized	1	5
Retail:Consumer [Member]
Commercial:
Recorded Investment (after charge-offs)	0	0
Unpaid Principal Balance	0	0
Commercial:
Recorded Investment (after charge-offs)	0	0
Unpaid principal balance with an allowance recorded	0	0
Related allowance	0	0
Commercial:
Recorded investment (after charge-offs)	0	0
Unpaid principal balance	0	0
Related Allowance	0	0
Average recorded investment	0	0
Interest income recognized	$ 0	$ 0