Note 4 - Residential Mortgage Loans Held in Securitization Trusts (Net) and Real Estate Owned (Details) - Past Due Loans (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Past Due Loans [Abstract]
Number of Delinquent Loans, 30-60 days late	1	3
Total Dollar Amount, 30-60 days late (in Dollars)	$ 234	$ 601
% of Loan Portfolio, 30-60 days late	0.15%	0.36%
Number of Delinquent Loans, 61-90 days late	2	1
Total Dollar Amount, 61-90 days late (in Dollars)	492	239
% of Loan Portfolio, 61-90 days late	0.31%	0.14%
Number of Delinquent Loans, 90+ days late	30	30
Total Dollar Amount, 90+ days late (in Dollars)	17,306	18,036
% of Loan Portfolio, 90+ days late	11.02%	10.76%
Number of Delinquent Loans, real estate owned through foreclosure	5	5
Total Dollar Amount, real estate owned through foreclosure (in Dollars)	$ 1,799	$ 2,381
% of Loan Portfolio, real estate owned through foreclosure	1.15%	1.42%