Note 8 - Disclosures about Fair Value of Assets and Liabilities (Details) - Fair Value of Financial Instruments (USD $)	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
Financial assets:
Cash and cash equivalents	$ 11,122,612	$ 12,303,200	$ 30,077,374	$ 41,663,405
Held-to-maturity securities	65,352	79,162
Federal Home Loan Bank stock	3,108,900	2,885,100
Mortgage loans held for sale	69,132	623,432
Loans, net	466,530,432	464,379,854
Financial liabilities:
Deposits	471,250,671	487,318,939
Securities sold under agreements to repurchase	10,000,000	10,000,000
Subordinated debentures	15,465,000	15,465,000
Interest payable	241,932	250,361
Interest payable, fair value	241,932	250,361
Fair Value, Inputs, Level 1 [Member]
Financial assets:
Cash and cash equivalents	11,122,612	12,303,200
Cash and cash equivalents, fair value	11,122,612	12,303,200
Fair Value, Inputs, Level 2 [Member]
Financial assets:
Held-to-maturity securities	65,352	79,162
Held-to-maturity securities, fair value	67,094	81,089
Federal Home Loan Bank stock	3,108,900	2,885,100
Federal Home Loan Bank stock, fair value	3,108,900	2,885,100
Mortgage loans held for sale	69,132	623,432
Mortgage loans held for sale, fair value	69,132	623,432
Interest receivable	1,669,005	1,852,641
Interest receivable, fair value	1,669,005	1,852,641
Financial liabilities:
Deposits	471,250,671	487,318,939
Deposits, fair value	462,054,468	476,503,513
Federal Home Loan Bank and Federal Reserve Bank advances	59,150,000	55,350,000
Federal Home Loan Bank and Federal Reserve Bank advances, fair value	61,310,921	57,185,083
Securities sold under agreements to repurchase	10,000,000	10,000,000
Securities sold under agreements to repurchase, fair value	10,524,690	7,978,555
Interest payable	241,932	250,361
Interest payable, fair value	241,932	250,361
Fair Value, Inputs, Level 3 [Member]
Financial assets:
Loans, net	466,530,432	464,379,854
Loans, net, fair value	466,944,109	466,057,001
Financial liabilities:
Subordinated debentures	15,465,000	15,465,000
Subordinated debentures, fair value	$ 15,465,000	$ 15,465,000