Note 3 - Loans and Allowance for Loan Losses (Details) - Troubled Debt Restructurings by Modification Type - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Financing Receivable, Modifications [Line Items]
Loan modifications	$ 7,934,375	$ 1,118,526
Interest Rate [Member]
Financing Receivable, Modifications [Line Items]
Loan modifications	0	0
Term [Member]
Financing Receivable, Modifications [Line Items]
Loan modifications	310,500	0
Combination [Member]
Financing Receivable, Modifications [Line Items]
Loan modifications	7,623,875	1,118,526
Residential Portfolio Segment [Member] | One-to-four Family Units [Member]
Financing Receivable, Modifications [Line Items]
Loan modifications	1,345,358	287,500
Residential Portfolio Segment [Member] | One-to-four Family Units [Member] | Interest Rate [Member]
Financing Receivable, Modifications [Line Items]
Loan modifications	0	0
Residential Portfolio Segment [Member] | One-to-four Family Units [Member] | Term [Member]
Financing Receivable, Modifications [Line Items]
Loan modifications	0	0
Residential Portfolio Segment [Member] | One-to-four Family Units [Member] | Combination [Member]
Financing Receivable, Modifications [Line Items]
Loan modifications	1,345,358	287,500
Residential Portfolio Segment [Member] | Multi-family Units [Member]
Financing Receivable, Modifications [Line Items]
Loan modifications	0	0
Residential Portfolio Segment [Member] | Multi-family Units [Member] | Interest Rate [Member]
Financing Receivable, Modifications [Line Items]
Loan modifications	0	0
Residential Portfolio Segment [Member] | Multi-family Units [Member] | Term [Member]
Financing Receivable, Modifications [Line Items]
Loan modifications	0	0
Residential Portfolio Segment [Member] | Multi-family Units [Member] | Combination [Member]
Financing Receivable, Modifications [Line Items]
Loan modifications	0	0
Residential Portfolio Segment [Member] | Construction Loans [Member]
Financing Receivable, Modifications [Line Items]
Loan modifications	5,655,969	0
Residential Portfolio Segment [Member] | Construction Loans [Member] | Interest Rate [Member]
Financing Receivable, Modifications [Line Items]
Loan modifications	0	0
Residential Portfolio Segment [Member] | Construction Loans [Member] | Term [Member]
Financing Receivable, Modifications [Line Items]
Loan modifications	0	0
Residential Portfolio Segment [Member] | Construction Loans [Member] | Combination [Member]
Financing Receivable, Modifications [Line Items]
Loan modifications	5,655,969	0
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Loan modifications	161,491	0
Commercial Real Estate Portfolio Segment [Member] | Interest Rate [Member]
Financing Receivable, Modifications [Line Items]
Loan modifications	0	0
Commercial Real Estate Portfolio Segment [Member] | Term [Member]
Financing Receivable, Modifications [Line Items]
Loan modifications	0	0
Commercial Real Estate Portfolio Segment [Member] | Combination [Member]
Financing Receivable, Modifications [Line Items]
Loan modifications	161,491	0
Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Loan modifications	771,557	831,026
Commercial Portfolio Segment [Member] | Interest Rate [Member]
Financing Receivable, Modifications [Line Items]
Loan modifications	0	0
Commercial Portfolio Segment [Member] | Term [Member]
Financing Receivable, Modifications [Line Items]
Loan modifications	310,500	0
Commercial Portfolio Segment [Member] | Combination [Member]
Financing Receivable, Modifications [Line Items]
Loan modifications	461,057	831,026
Consumer Portfolio Segment [Member] | Other Loans [Member]
Financing Receivable, Modifications [Line Items]
Loan modifications	0	0
Consumer Portfolio Segment [Member] | Other Loans [Member] | Interest Rate [Member]
Financing Receivable, Modifications [Line Items]
Loan modifications	0	0
Consumer Portfolio Segment [Member] | Other Loans [Member] | Term [Member]
Financing Receivable, Modifications [Line Items]
Loan modifications	0	0
Consumer Portfolio Segment [Member] | Other Loans [Member] | Combination [Member]
Financing Receivable, Modifications [Line Items]
Loan modifications	$ 0	$ 0