Note 3 - Loans and Allowance for Loan Losses (Details) - Nonaccruing Loans - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Real estate - residential mortgage:
Nonaccruing loans	$ 13,755,475	$ 5,290,607
Residential Portfolio Segment [Member] | One-to-four Family Units [Member]
Real estate - residential mortgage:
Nonaccruing loans	2,272,535	911,240
Residential Portfolio Segment [Member] | Multi-family Units [Member]
Real estate - residential mortgage:
Nonaccruing loans	0	0
Residential Portfolio Segment [Member] | Construction Loans [Member]
Real estate - residential mortgage:
Nonaccruing loans	8,079,807	2,892,772
Commercial Real Estate Portfolio Segment [Member]
Real estate - residential mortgage:
Nonaccruing loans	1,240,909	459,823
Commercial Portfolio Segment [Member]
Real estate - residential mortgage:
Nonaccruing loans	2,149,333	1,026,772
Consumer Portfolio Segment [Member] | Other Loans [Member]
Real estate - residential mortgage:
Nonaccruing loans	$ 12,891	$ 0