Note 4 - Residential Mortgage Loans Held in Securitization Trusts (Net) and Real Estate Owned (Details) (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
Note 4 - Residential Mortgage Loans Held in Securitization Trusts (Net) and Real Estate Owned (Details) [Line Items]
Financing Receivable, Allowance for Credit Losses	$ 3,354,000	$ 2,989,000	$ 3,169,000	$ 2,978,000
Financing Receivable, Allowance for Credit Losses, Basis Points	2.16%	1.81%
CDOs Outstanding	5,800,000	6,600,000
Mortgage Loans on Real Estate, Number of Loans	33	34
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	18,000,000	18,900,000
Under Temporary Modified Payment Plan [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	$ 9,400,000	$ 9,100,000
Modified Percent	52.00%	48.00%