Note 3 - Loans and Allowance for Credit Losses (Details) - Impaired Loans (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Commercial [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance recorded, Recorded Investment	$ 3,931	$ 3,100
Impaired loans with no related allowance recorded, Unpaid Principal Balance	4,498	9,506
Impaired loans with an allowance recorded, Recorded Investment	1,000	12,129
Impaired loans with an allowance recorded, Unpaid Principal Balance	2,173	13,739
Impaired loans with an allowance recorded, Related Allowance	100	2,588
Total Impaired loans, Recorded Investment	4,931	15,229
Total Impaired loans, Unpaid Principal Balance	6,671	23,245
Total Impaired loans, Related Allowance	100	2,588
Commercial Real Estate Loans [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance recorded, Recorded Investment	11,002	24,135
Impaired loans with no related allowance recorded, Unpaid Principal Balance	13,253	27,972
Impaired loans with an allowance recorded, Recorded Investment	9,773	4,038
Impaired loans with an allowance recorded, Unpaid Principal Balance	12,482	4,038
Impaired loans with an allowance recorded, Related Allowance	1,396	164
Total Impaired loans, Recorded Investment	20,775	28,173
Total Impaired loans, Unpaid Principal Balance	25,735	32,010
Total Impaired loans, Related Allowance	1,396	164
Construction [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance recorded, Recorded Investment	2,483	2,363
Impaired loans with no related allowance recorded, Unpaid Principal Balance	2,947	2,992
Total Impaired loans, Recorded Investment	2,483	2,363
Total Impaired loans, Unpaid Principal Balance	2,947	2,992
Consumer Installment And Other [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance recorded, Recorded Investment	2,014	2,328
Impaired loans with no related allowance recorded, Unpaid Principal Balance	2,133	2,616
Total Impaired loans, Recorded Investment	2,014	2,328
Total Impaired loans, Unpaid Principal Balance	2,133	2,616
Residential Real Estate Loans [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance recorded, Recorded Investment		668
Impaired loans with no related allowance recorded, Unpaid Principal Balance		668
Total Impaired loans, Recorded Investment		668
Total Impaired loans, Unpaid Principal Balance		$ 668