Note 5 - Loans (Details) - Mortgage Loan by Credit Quality Indicators (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
Note 5 - Loans (Details) - Mortgage Loan by Credit Quality Indicators [Line Items]
Gross Loans	$ 756,814	$ 738,282	$ 733,940
Revolving Lines Secured By Single Family Residential Properties [Member] | Performing Financing Receivable [Member]
Note 5 - Loans (Details) - Mortgage Loan by Credit Quality Indicators [Line Items]
Gross Loans	64,869	58,935
Revolving Lines Secured By Single Family Residential Properties [Member] | Nonperforming Financing Receivable [Member]
Note 5 - Loans (Details) - Mortgage Loan by Credit Quality Indicators [Line Items]
Gross Loans	1,019	816
Revolving Lines Secured By Single Family Residential Properties [Member]
Note 5 - Loans (Details) - Mortgage Loan by Credit Quality Indicators [Line Items]
Gross Loans	65,888	59,751
Single Family Residential Closed End First Lien [Member] | Performing Financing Receivable [Member]
Note 5 - Loans (Details) - Mortgage Loan by Credit Quality Indicators [Line Items]
Gross Loans	101,170	99,080
Single Family Residential Closed End First Lien [Member] | Nonperforming Financing Receivable [Member]
Note 5 - Loans (Details) - Mortgage Loan by Credit Quality Indicators [Line Items]
Gross Loans	3,585	4,442
Single Family Residential Closed End First Lien [Member]
Note 5 - Loans (Details) - Mortgage Loan by Credit Quality Indicators [Line Items]
Gross Loans	104,755	103,522
Single Family Residential Closed End Junior Lien [Member] | Performing Financing Receivable [Member]
Note 5 - Loans (Details) - Mortgage Loan by Credit Quality Indicators [Line Items]
Gross Loans	3,818	4,608
Single Family Residential Closed End Junior Lien [Member] | Nonperforming Financing Receivable [Member]
Note 5 - Loans (Details) - Mortgage Loan by Credit Quality Indicators [Line Items]
Gross Loans	232	299
Single Family Residential Closed End Junior Lien [Member]
Note 5 - Loans (Details) - Mortgage Loan by Credit Quality Indicators [Line Items]
Gross Loans	4,050	4,907
Single Family Residential Loans [Member] | Performing Financing Receivable [Member]
Note 5 - Loans (Details) - Mortgage Loan by Credit Quality Indicators [Line Items]
Gross Loans	169,857	162,623
Single Family Residential Loans [Member] | Nonperforming Financing Receivable [Member]
Note 5 - Loans (Details) - Mortgage Loan by Credit Quality Indicators [Line Items]
Gross Loans	4,836	5,557
Single Family Residential Loans [Member]
Note 5 - Loans (Details) - Mortgage Loan by Credit Quality Indicators [Line Items]
Gross Loans	$ 174,693	$ 168,180