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	Sep. 30, 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	$ 137	$ 78
Nonaccrual	4,633	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	129	72
Nonaccrual	3,070	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	1,426	799
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	8	5
Nonaccrual	25	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	43	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
Nonaccrual	69
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
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		$ 21