Note 8 - Disclosures about Fair Value of Assets and Liabilities (Details) - Fair Value of Financial Instruments (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Dec. 31, 2012
Financial assets:
Cash and cash equivalents	$ 20,831,026	$ 12,303,200	$ 23,855,188	$ 41,663,405
Held-to-maturity securities	69,862	79,162
Federal Home Loan Bank stock	2,878,900	2,885,100
Mortgage loans held for sale	1,221,633	623,432
Loans, net	454,151,996	464,379,854
Financial liabilities:
Deposits	481,152,569	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	239,297	250,361
Interest payable, fair value	239,297	250,361
Fair Value, Inputs, Level 1 [Member]
Financial assets:
Cash and cash equivalents	20,831,026	12,303,200
Cash and cash equivalents, fair value	20,831,026	12,303,200
Fair Value, Inputs, Level 2 [Member]
Financial assets:
Held-to-maturity securities	69,862	79,162
Held-to-maturity securities, fair value	71,628	81,089
Federal Home Loan Bank stock	2,878,900	2,885,100
Federal Home Loan Bank stock, fair value	2,878,900	2,885,100
Mortgage loans held for sale	1,221,633	623,432
Mortgage loans held for sale, fair value	1,221,633	623,432
Interest receivable	1,839,238	1,852,641
Interest receivable, fair value	1,839,238	1,852,641
Financial liabilities:
Deposits	481,152,569	487,318,939
Deposits, fair value	472,721,120	476,503,513
Federal Home Loan Bank advances	53,400,000	55,350,000
Federal Home Loan Bank advances, fair value	55,526,499	57,185,083
Securities sold under agreements to repurchase	10,000,000	10,000,000
Securities sold under agreements to repurchase, fair value	10,529,097	7,978,555
Interest payable	239,297	250,361
Interest payable, fair value	239,297	250,361
Fair Value, Inputs, Level 3 [Member]
Financial assets:
Loans, net	454,151,996	464,379,854
Loans, net, fair value	456,076,651	466,057,001
Financial liabilities:
Subordinated debentures	15,465,000	15,465,000
Subordinated debentures, fair value	$ 15,465,000	$ 15,465,000