Note 4 - Loans and Allowance for Loan Losses (Details) - Troubled Debt Restructurings - USD ($)	Mar. 31, 2016	Dec. 31, 2015
Financing Receivable, Modifications [Line Items]
TDRs, carrying balance	$ 11,183,539	$ 11,240,738
Residential Portfolio Segment [Member] | One-to-four Family Units [Member]
Financing Receivable, Modifications [Line Items]
TDRs, carrying balance	1,522,938	1,556,964
Residential Portfolio Segment [Member] | Multi-family Units [Member]
Financing Receivable, Modifications [Line Items]
TDRs, carrying balance	0	0
Residential Portfolio Segment [Member] | Construction Loans [Member]
Financing Receivable, Modifications [Line Items]
TDRs, carrying balance	8,071,840	8,079,807
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
TDRs, carrying balance	161,491	161,491
Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
TDRs, carrying balance	1,427,270	1,442,476
Consumer Portfolio Segment [Member] | Other Loans [Member]
Financing Receivable, Modifications [Line Items]
TDRs, carrying balance	$ 0	$ 0