Note 3 - Loans and Allowance for Loan Losses - Nonaccruing Loans (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Nonaccruing loans	$ 8,631,639	$ 13,755,475
Residential Portfolio Segment [Member] | One To Four Family Units [Member]
Nonaccruing loans	2,060,180	2,272,535
Residential Portfolio Segment [Member] | Multi Family Units [Member]
Nonaccruing loans
Residential Portfolio Segment [Member] | Construction Loans [Member]
Nonaccruing loans	5,446,896	8,079,807
Commercial Real Estate Portfolio Segment [Member]
Nonaccruing loans	161,491	1,240,909
Commercial Portfolio Segment [Member]
Nonaccruing loans	925,281	2,149,333
Consumer Portfolio Segment [Member] | Other Loans [Member]
Nonaccruing loans	$ 37,791	$ 12,891