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Note 6 - Investments in Affordable Housing Partnerships (Details) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Investments In Affordable Housing Partnerships [Abstract]      
Minimum Compliance Period for Tax Credits 15 years    
Equity Method Investments $ 3,574,183us-gaap_EquityMethodInvestments $ 4,466,001us-gaap_EquityMethodInvestments  
Effective Income Tax Rate Reconciliation, Tax Credit, Investment, Amount 1,221,394us-gaap_IncomeTaxReconciliationTaxCreditsInvestment 1,221,394us-gaap_IncomeTaxReconciliationTaxCreditsInvestment 1,247,394us-gaap_IncomeTaxReconciliationTaxCreditsInvestment
Amortization $ 885,478us-gaap_AdjustmentForAmortization $ 885,478us-gaap_AdjustmentForAmortization $ 885,478us-gaap_AdjustmentForAmortization