Note 8 - Loans and Allowance for Loan Losses (Details) - Retail Loans by Credit Quality (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment [Line Items]
Retail Loans	$ 521,973	$ 501,752
Retail:1-4 Family Residential Mortgages [Member] | Performing Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Retail Loans	34,682	29,329
Retail:1-4 Family Residential Mortgages [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Retail Loans	389	401
Retail:1-4 Family Residential Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Retail Loans	35,071	29,730
Retail Home Equity Loans And Lines [Member] | Performing Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Retail Loans	61,527	59,712
Retail Home Equity Loans And Lines [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Retail Loans	275	265
Retail Home Equity Loans And Lines [Member]
Financing Receivable, Recorded Investment [Line Items]
Retail Loans	61,802	59,977
Retail:Consumer [Member] | Performing Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Retail Loans	3,914	3,099
Retail:Consumer [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Retail Loans		17
Retail:Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Retail Loans	3,914	3,116
Total Retail Loans [Member] | Performing Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Retail Loans	100,123	92,140
Total Retail Loans [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Retail Loans	664	683
Total Retail Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Retail Loans	$ 100,787	$ 92,823