Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment of Nonaccrual Loans and Loans Past Due 90 days (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment of Nonaccrual Loans and Loans Past Due 90 days [Line Items]
Loans past due 90 days and still accruing	$ 50	$ 78
Nonaccrual	3,698	3,580
Residential Real Estate Loans [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment of Nonaccrual Loans and Loans Past Due 90 days [Line Items]
Loans past due 90 days and still accruing	38	72
Nonaccrual	3,189	2,662
Commercial Real Estate Owner Occupied [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment of Nonaccrual Loans and Loans Past Due 90 days [Line Items]
Nonaccrual	465	799
Commercial and Industrial [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment of Nonaccrual Loans and Loans Past Due 90 days [Line Items]
Nonaccrual	2	21
Automobile Loans [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment of Nonaccrual Loans and Loans Past Due 90 days [Line Items]
Loans past due 90 days and still accruing	12	5
Nonaccrual	4	8
Home Equity Loans [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment of Nonaccrual Loans and Loans Past Due 90 days [Line Items]
Nonaccrual	38	38
Other Consumer Loans [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment of Nonaccrual Loans and Loans Past Due 90 days [Line Items]
Loans past due 90 days and still accruing		1
Nonowner Occupied [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment of Nonaccrual Loans and Loans Past Due 90 days [Line Items]
Nonaccrual		$ 52