Note 4 - Loans and Allowance for Loan Losses (Detail) - Troubled Debt Restructurings (USD $)	Mar. 31, 2013	Dec. 31, 2012
Real estate - residential mortgage:
Troubled Debt Restructurings Number of Loans	4
Troubled Debt Restructurings Pre-Modification Outstanding Recorded Balance	$ 4,539,194
Troubled Debt Restructurings Post-Modification Outstanding Recorded Balance	4,786,029
Troubled Debt Restructurings Balance	15,510,173	11,980,742
One to Four Family Units [Member] | Interest Rate [Member]
Real estate - residential mortgage:
Troubled Debt Restructurings Balance	0
One to Four Family Units [Member] | Term [Member]
Real estate - residential mortgage:
Troubled Debt Restructurings Balance	0
One to Four Family Units [Member] | Combination [Member]
Real estate - residential mortgage:
Troubled Debt Restructurings Balance	0
One to Four Family Units [Member] | Modifications in Current Year [Member]
Real estate - residential mortgage:
Troubled Debt Restructurings Balance	0
One to Four Family Units [Member]
Real estate - residential mortgage:
Troubled Debt Restructurings Number of Loans	0
Troubled Debt Restructurings Pre-Modification Outstanding Recorded Balance	0
Troubled Debt Restructurings Post-Modification Outstanding Recorded Balance	0
Troubled Debt Restructurings Balance	1,593,596	1,653,934
Multi-Family Units [Member] | Interest Rate [Member]
Real estate - residential mortgage:
Troubled Debt Restructurings Balance	0
Multi-Family Units [Member] | Term [Member]
Real estate - residential mortgage:
Troubled Debt Restructurings Balance	0
Multi-Family Units [Member] | Combination [Member]
Real estate - residential mortgage:
Troubled Debt Restructurings Balance	0
Multi-Family Units [Member] | Modifications in Current Year [Member]
Real estate - residential mortgage:
Troubled Debt Restructurings Balance	0
Multi-Family Units [Member]
Real estate - residential mortgage:
Troubled Debt Restructurings Number of Loans	0
Troubled Debt Restructurings Pre-Modification Outstanding Recorded Balance	0
Troubled Debt Restructurings Post-Modification Outstanding Recorded Balance	0
Troubled Debt Restructurings Balance	0	0
Real Estate Construction [Member] | Interest Rate [Member]
Real estate - residential mortgage:
Troubled Debt Restructurings Balance	0
Real Estate Construction [Member] | Term [Member]
Real estate - residential mortgage:
Troubled Debt Restructurings Balance	266,098
Real Estate Construction [Member] | Combination [Member]
Real estate - residential mortgage:
Troubled Debt Restructurings Balance	0
Real Estate Construction [Member] | Modifications in Current Year [Member]
Real estate - residential mortgage:
Troubled Debt Restructurings Balance	266,098
Real Estate Construction [Member]
Real estate - residential mortgage:
Troubled Debt Restructurings Number of Loans	1
Troubled Debt Restructurings Pre-Modification Outstanding Recorded Balance	266,098
Troubled Debt Restructurings Post-Modification Outstanding Recorded Balance	266,098
Troubled Debt Restructurings Balance	6,052,236	6,229,201
Real Estate Commercial [Member] | Interest Rate [Member]
Real estate - residential mortgage:
Troubled Debt Restructurings Balance	0
Real Estate Commercial [Member] | Term [Member]
Real estate - residential mortgage:
Troubled Debt Restructurings Balance	0
Real Estate Commercial [Member] | Combination [Member]
Real estate - residential mortgage:
Troubled Debt Restructurings Balance	3,297,014
Real Estate Commercial [Member] | Modifications in Current Year [Member]
Real estate - residential mortgage:
Troubled Debt Restructurings Balance	3,297,014
Real Estate Commercial [Member]
Real estate - residential mortgage:
Troubled Debt Restructurings Number of Loans	2
Troubled Debt Restructurings Pre-Modification Outstanding Recorded Balance	3,275,179
Troubled Debt Restructurings Post-Modification Outstanding Recorded Balance	3,297,014
Troubled Debt Restructurings Balance	5,120,540	2,246,508
Commercial Loans [Member] | Interest Rate [Member]
Real estate - residential mortgage:
Troubled Debt Restructurings Balance	1,222,917
Commercial Loans [Member] | Term [Member]
Real estate - residential mortgage:
Troubled Debt Restructurings Balance	0
Commercial Loans [Member] | Combination [Member]
Real estate - residential mortgage:
Troubled Debt Restructurings Balance	0
Commercial Loans [Member] | Modifications in Current Year [Member]
Real estate - residential mortgage:
Troubled Debt Restructurings Balance	1,222,917
Commercial Loans [Member]
Real estate - residential mortgage:
Troubled Debt Restructurings Number of Loans	1
Troubled Debt Restructurings Pre-Modification Outstanding Recorded Balance	997,917
Troubled Debt Restructurings Post-Modification Outstanding Recorded Balance	1,222,917
Troubled Debt Restructurings Balance	2,743,801	1,851,099
Consumer and Other Loans [Member] | Interest Rate [Member]
Real estate - residential mortgage:
Troubled Debt Restructurings Balance	0
Consumer and Other Loans [Member] | Term [Member]
Real estate - residential mortgage:
Troubled Debt Restructurings Balance	0
Consumer and Other Loans [Member] | Combination [Member]
Real estate - residential mortgage:
Troubled Debt Restructurings Balance	0
Consumer and Other Loans [Member] | Modifications in Current Year [Member]
Real estate - residential mortgage:
Troubled Debt Restructurings Balance	0
Consumer and Other Loans [Member]
Real estate - residential mortgage:
Troubled Debt Restructurings Number of Loans	0
Troubled Debt Restructurings Pre-Modification Outstanding Recorded Balance	0
Troubled Debt Restructurings Post-Modification Outstanding Recorded Balance	0
Troubled Debt Restructurings Balance	0	0
Interest Rate [Member]
Real estate - residential mortgage:
Troubled Debt Restructurings Balance	1,222,917
Term [Member]
Real estate - residential mortgage:
Troubled Debt Restructurings Balance	266,098
Combination [Member]
Real estate - residential mortgage:
Troubled Debt Restructurings Balance	3,297,014
Modifications in Current Year [Member]
Real estate - residential mortgage:
Troubled Debt Restructurings Balance	$ 4,786,029