Note 4 - Loans and Allowance for Loan Losses (Details) - Nonaccruing Loans - USD ($)	Mar. 31, 2016	Dec. 31, 2015
Real estate - residential mortgage:
Nonaccruing loans	$ 13,513,628	$ 13,755,475
Residential Portfolio Segment [Member] | One-to-four Family Units [Member]
Real estate - residential mortgage:
Nonaccruing loans	2,327,991	2,272,535
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	8,071,840	8,079,807
Commercial Real Estate Portfolio Segment [Member]
Real estate - residential mortgage:
Nonaccruing loans	1,181,609	1,240,909
Commercial Portfolio Segment [Member]
Real estate - residential mortgage:
Nonaccruing loans	1,872,808	2,149,333
Consumer Portfolio Segment [Member] | Other Loans [Member]
Real estate - residential mortgage:
Nonaccruing loans	$ 59,380	$ 12,891