Note 4 - Loans and Allowance for Loan Losses - Nonaccruing Loans (Details) - USD ($)	Sep. 30, 2016	Dec. 31, 2015
Residential Portfolio Segment [Member] | One To Four Family Units [Member]
Nonaccruing loans	$ 2,137,884	$ 2,272,535
Residential Portfolio Segment [Member] | Multi Family Units [Member]
Nonaccruing loans
Residential Portfolio Segment [Member] | Construction Loans [Member]
Nonaccruing loans	7,536,662	8,079,807
Commercial Real Estate Portfolio Segment [Member]
Nonaccruing loans	1,077,642	1,240,909
Commercial Portfolio Segment [Member]
Nonaccruing loans	943,259	2,149,333
Consumer Portfolio Segment [Member] | Other Loans [Member]
Nonaccruing loans	37,526	12,891
Nonaccruing loans	$ 11,732,973	$ 13,755,475