Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment of Residential and Consumer Loans (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Automobile Loans [Member] | Performing Financing Receivable [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment of Residential and Consumer Loans [Line Items]
Consumer Loans	$ 41,712	$ 38,798
Automobile Loans [Member] | Nonperforming Financing Receivable [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment of Residential and Consumer Loans [Line Items]
Consumer Loans	33	13
Automobile Loans [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment of Residential and Consumer Loans [Line Items]
Consumer Loans	41,745	38,811
Home Equity Loans [Member] | Performing Financing Receivable [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment of Residential and Consumer Loans [Line Items]
Consumer Loans	17,655	17,710
Home Equity Loans [Member] | Nonperforming Financing Receivable [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment of Residential and Consumer Loans [Line Items]
Consumer Loans	43	38
Home Equity Loans [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment of Residential and Consumer Loans [Line Items]
Consumer Loans	17,698	17,748
Other Consumer Loans [Member] | Performing Financing Receivable [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment of Residential and Consumer Loans [Line Items]
Consumer Loans	45,283	45,720
Other Consumer Loans [Member] | Nonperforming Financing Receivable [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment of Residential and Consumer Loans [Line Items]
Consumer Loans	69	1
Other Consumer Loans [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment of Residential and Consumer Loans [Line Items]
Consumer Loans	45,352	45,721
Residential Real Estate Loans [Member] | Performing Financing Receivable [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment of Residential and Consumer Loans [Line Items]
Consumer Loans	207,699	211,274
Residential Real Estate Loans [Member] | Nonperforming Financing Receivable [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment of Residential and Consumer Loans [Line Items]
Consumer Loans	3,199	2,734
Residential Real Estate Loans [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment of Residential and Consumer Loans [Line Items]
Consumer Loans	210,898	214,008
Consumer Loans [Member] | Performing Financing Receivable [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment of Residential and Consumer Loans [Line Items]
Consumer Loans	312,349	313,502
Consumer Loans [Member] | Nonperforming Financing Receivable [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment of Residential and Consumer Loans [Line Items]
Consumer Loans	3,344	2,786
Consumer Loans [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment of Residential and Consumer Loans [Line Items]
Consumer Loans	$ 315,693	$ 316,288