Note 4 - Residential Mortgage Loans Held in Securitization Trusts (Net) and Real Estate Owned (Details) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Note 4 - Residential Mortgage Loans Held in Securitization Trusts (Net) and Real Estate Owned (Details) [Line Items]        
Financing Receivable, Allowance for Credit Losses $ 2,989,000 $ 2,978,000 $ 3,331,000 $ 2,589,000
CDOs Outstanding 6,600,000 7,000,000    
Mortgage Loans on Real Estate, Number of Loans 34 35    
Mortgage Loans on Real Estate, Principal Amount of Delinquent Loans 18,900,000      
Modified Percent 48.00% 78.00%    
Modified [Member]
       
Note 4 - Residential Mortgage Loans Held in Securitization Trusts (Net) and Real Estate Owned (Details) [Line Items]        
Mortgage Loans on Real Estate, Principal Amount of Delinquent Loans 9,100,000 15,200,000    
Residential Mortgage Loans Held in Securitization Trusts and Real Estate Owned Held in Residential Securitization [Member]
       
Note 4 - Residential Mortgage Loans Held in Securitization Trusts (Net) and Real Estate Owned (Details) [Line Items]        
Mortgage Loans on Real Estate, Principal Amount of Delinquent Loans   $ 19,500,000    
Basis Points [Member]
       
Note 4 - Residential Mortgage Loans Held in Securitization Trusts (Net) and Real Estate Owned (Details) [Line Items]        
Financing Receivable, Allowance for Credit Losses, Risk Characteristics 181 158