Note 4 - Loans and Allowance for Loan Losses (Details) - Loans Individually Evaluated for Impairment (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
With an allowance recorded:
Impaired Financing Receive with an Allowance Recorded - Allowance for Loan Losses allocated	$ 1,688	$ 2,625
With no related allowance recorded:
Unpaid Principal Balance	21,399	16,255
Recorded Investment	19,499	14,696
Allowance for Loan Losses allocated	1,688	2,625
Residential Real Estate Loans [Member]
With an allowance recorded:
Impaired Financing Receive with an Allowance Recorded - Unpaid Principal Balance	411	672
Impaired Financing Receive with an Allowance Recorded - Recorded Investment	411	672
Impaired Financing Receive with an Allowance Recorded - Allowance for Loan Losses allocated	115	213
With no related allowance recorded:
Impaired Financing Receive with No Allowance Recorded - Unpaid Principal Balance	1,418	766
Impaired Financing Receive with No Allowance Recorded - Recorded Investment	1,418	766
Allowance for Loan Losses allocated	115	213
Commercial Real Estate Nonowner Occupied [Member]
With an allowance recorded:
Impaired Financing Receive with an Allowance Recorded - Unpaid Principal Balance	3,295	3,357
Impaired Financing Receive with an Allowance Recorded - Recorded Investment	3,295	3,357
Impaired Financing Receive with an Allowance Recorded - Allowance for Loan Losses allocated	670	1,384
With no related allowance recorded:
Impaired Financing Receive with No Allowance Recorded - Unpaid Principal Balance	6,201	6,343
Impaired Financing Receive with No Allowance Recorded - Recorded Investment	5,601	5,743
Allowance for Loan Losses allocated	670	1,384
Commercial and Industrial [Member]
With an allowance recorded:
Impaired Financing Receive with an Allowance Recorded - Unpaid Principal Balance	2,309	2,658
Impaired Financing Receive with an Allowance Recorded - Recorded Investment	2,309	2,658
Impaired Financing Receive with an Allowance Recorded - Allowance for Loan Losses allocated	898	864
With no related allowance recorded:
Impaired Financing Receive with No Allowance Recorded - Unpaid Principal Balance	4,056	412
Impaired Financing Receive with No Allowance Recorded - Recorded Investment	3,303
Allowance for Loan Losses allocated	898	864
Home Equity Loans [Member]
With an allowance recorded:
Impaired Financing Receive with an Allowance Recorded - Unpaid Principal Balance	218	218
Impaired Financing Receive with an Allowance Recorded - Recorded Investment	218	218
Impaired Financing Receive with an Allowance Recorded - Allowance for Loan Losses allocated	5	7
With no related allowance recorded:
Allowance for Loan Losses allocated	5	7
Commercial Real Estate Owner Occupied [Member]
With an allowance recorded:
Impaired Financing Receive with an Allowance Recorded - Unpaid Principal Balance		290
Impaired Financing Receive with an Allowance Recorded - Recorded Investment		290
Impaired Financing Receive with an Allowance Recorded - Allowance for Loan Losses allocated		157
With no related allowance recorded:
Impaired Financing Receive with No Allowance Recorded - Unpaid Principal Balance	3,491	1,539
Impaired Financing Receive with No Allowance Recorded - Recorded Investment	2,944	992
Allowance for Loan Losses allocated		$ 157