Consolidated Balance Sheets (Parentheticals) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Loans receivable, allowance for loan losses	$ 5,742,449	$ 5,811,940
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, authorized (in shares)	10,000,000	10,000,000
Common stock, issued (in shares)	6,875,503	6,859,003
Treasury stock, shares (in shares)	2,465,476	2,466,462