Note 3 - Loans (Details) - Unpaid Principal Balance in Financing Receivables (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013 Commercial and Industrial [Member]	Sep. 30, 2012 Commercial and Industrial [Member]	Sep. 30, 2013 Commercial Real Estate Loans [Member]	Sep. 30, 2012 Commercial Real Estate Loans [Member]	Sep. 30, 2013 First Lien Residential Mortgage Loans [Member]	Sep. 30, 2012 First Lien Residential Mortgage Loans [Member]	Sep. 30, 2013 Junior Lein Residential Mortgage Loans [Member]	Sep. 30, 2012 Junior Lein Residential Mortgage Loans [Member]	Sep. 30, 2013 Consumer Loans [Member]	Sep. 30, 2012 Consumer Loans [Member]	Sep. 30, 2013 Unallocated Financing Receivables [Member]	Sep. 30, 2012 Unallocated Financing Receivables [Member]	Sep. 30, 2013 Unpaid Principle Balance [Member]	Sep. 30, 2012 Unpaid Principle Balance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance Ending balance: individually evaluated for impairment			$ 524	$ 321	$ 4,137	$ 3,479	$ 2,493	$ 0	$ 137	$ 0	$ 27	$ 0	$ 0	$ 0	$ 7,318	$ 3,800
Allowance Ending balance: collectively evaluated for impairment			1,349	1,769	6,138	7,874	3,288	5,952	401	578	586	856	528	503	12,290	17,532
Financing Receivable Ending balance	982,286	963,762	159,091	152,259	479,660	479,577	217,544	215,893	54,851	60,661	70,937	69,020	0	0	982,083	977,410
Financing Receivable Ending balance: individually evaluated for impairment			1,659	2,675	19,548	22,625	9,505	0	523	0	141	0	0	0	31,376	25,300
Financing Receivable Ending balance: collectively evaluated for impairment			$ 157,432	$ 149,584	$ 460,112	$ 456,952	$ 208,039	$ 215,893	$ 54,328	$ 60,661	$ 70,796	$ 69,020	$ 0	$ 0	$ 950,707	$ 952,110