Note 13 - Fair Value of Financial Instruments (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2013
Distressed Residential Mortgage Loans [Member]
Other Assets [Member]
Dec. 31, 2013
Distressed Residential Mortgage Loans [Member]
Dec. 31, 2012
Distressed Residential Mortgage Loans [Member]
Dec. 31, 2013
Collateralized Mortgage Backed Securities Held In Securitization Trusts [Member]
Minimum [Member]
Dec. 31, 2013
Collateralized Mortgage Backed Securities Held In Securitization Trusts [Member]
Maximum [Member]
Dec. 31, 2013
Multi-Family Loans Held in Securitization Trusts [Member]
Minimum [Member]
Dec. 31, 2013
Multi-Family Loans Held in Securitization Trusts [Member]
Maximum [Member]
Note 13 - Fair Value of Financial Instruments (Details) [Line Items]                  
Fair Value Inputs, Discount Rate           4.20% 16.10% 3.40% 6.50%
Financial Instruments, Owned, Mortgages, Mortgage-backed and Asset-backed Securities, at Fair Value (in Dollars) $ 163,237 $ 187,229 $ 9,700 $ 254,700 $ 60,500