Note 5 - Loans Receivable and the Allowance for Loan Losses (Details) - Impaired Loans (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Impaired [Line Items]
Recorded Investment (after charge-offs)	$ 22,515,000	$ 23,771,000
Unpaid Principal Balance	23,404,000	24,975,000
Recorded investment (after charge-offs)	5,102,000	8,533,000
Unpaid principal balance	5,609,000	9,302,000
Related Allowance	2,022,000	2,701,000
Recorded investment (after charge-offs)	27,617,000	32,304,000
Unpaid principal balance	29,013,000	34,277,000
Average recorded investment	29,254,000	32,543,000
Interest income recognized	560,000	847,000
Commercial:Commercial and Industrial [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment (after charge-offs)	8,222,000	5,241,000
Unpaid Principal Balance	8,417,000	5,477,000
Recorded investment (after charge-offs)	2,082,000	2,512,000
Unpaid principal balance	2,350,000	2,687,000
Related Allowance	1,106,000	1,309,000
Recorded investment (after charge-offs)	10,304,000	7,753,000
Unpaid principal balance	10,767,000	8,164,000
Average recorded investment	6,732,000	7,657,000
Interest income recognized	34,000	74,000
Commercial:Construction [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment (after charge-offs)	916,000	3,990,000
Unpaid Principal Balance	1,140,000	4,170,000
Recorded investment (after charge-offs)	435,000
Unpaid principal balance	493,000
Related Allowance	121,000
Recorded investment (after charge-offs)	1,351,000	3,990,000
Unpaid principal balance	1,633,000	4,170,000
Average recorded investment	3,179,000	4,972,000
Interest income recognized	46,000	111,000
Commercial:Secured by Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment (after charge-offs)	12,251,000	11,392,000
Unpaid Principal Balance	12,568,000	12,128,000
Recorded investment (after charge-offs)	37,000	3,539,000
Unpaid principal balance	37,000	4,023,000
Related Allowance	9,000	619,000
Recorded investment (after charge-offs)	12,288,000	14,931,000
Unpaid principal balance	12,605,000	16,151,000
Average recorded investment	13,765,000	14,883,000
Interest income recognized	399,000	541,000
Commercial Secured By Residential Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment (after charge-offs)	728,000	897,000
Unpaid Principal Balance	839,000	912,000
Recorded investment (after charge-offs)	2,105,000	1,946,000
Unpaid principal balance	2,248,000	2,024,000
Related Allowance	639,000	543,000
Recorded investment (after charge-offs)	2,833,000	2,843,000
Unpaid principal balance	3,087,000	2,936,000
Average recorded investment	3,090,000	2,439,000
Interest income recognized	23,000	47,000
State And Political Subdivisions [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment (after charge-offs)		1,849,000
Unpaid Principal Balance		1,850,000
Recorded investment (after charge-offs)		1,849,000
Unpaid principal balance		1,850,000
Average recorded investment	1,636,000	1,478,000
Interest income recognized	53,000	64,000
Indirect Lease Financing [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment (after charge-offs)	13,000	37,000
Unpaid Principal Balance	16,000	44,000
Recorded investment (after charge-offs)	24,000	61,000
Unpaid principal balance	27,000	67,000
Related Allowance	3,000	13,000
Recorded investment (after charge-offs)	37,000	98,000
Unpaid principal balance	43,000	111,000
Average recorded investment	63,000	86,000
Retail:1-4 Family Residential Mortgages [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment (after charge-offs)	250,000	181,000
Unpaid Principal Balance	274,000	198,000
Recorded investment (after charge-offs)	272,000	275,000
Unpaid principal balance	284,000	287,000
Related Allowance	63,000	90,000
Recorded investment (after charge-offs)	522,000	456,000
Unpaid principal balance	558,000	485,000
Average recorded investment	495,000	518,000
Interest income recognized	5,000	5,000
Retail Home Equity Loans And Lines [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment (after charge-offs)	135,000	184,000
Unpaid Principal Balance	150,000	196,000
Recorded investment (after charge-offs)	131,000	200,000
Unpaid principal balance	154,000	214,000
Related Allowance	70,000	127,000
Recorded investment (after charge-offs)	266,000	384,000
Unpaid principal balance	304,000	410,000
Average recorded investment	293,000	510,000
Interest income recognized		5,000
Retail:Consumer [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment (after charge-offs)	16,000
Unpaid principal balance	16,000
Related Allowance	11,000
Recorded investment (after charge-offs)	16,000
Unpaid principal balance	16,000
Average recorded investment	$ 1,000