Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment of Residential and Consumer Loans (USD $) In Thousands, unless otherwise specified	Mar. 31, 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	$ 39,607	$ 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	16	13
Automobile Loans [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) - Recorded Investment of Residential and Consumer Loans [Line Items]
Consumer Loans	39,623	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	17,489	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	38	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	17,527	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	43,489	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		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	43,489	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	210,597	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	3,227	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	213,824	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	311,182	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	3,281	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	$ 314,463	$ 316,288