Note 13 - Fair Value of Financial Instruments (Details) - Assets Measured at Fair Value on a Nonrecurring Basis (Fair Value, Measurements, Nonrecurring [Member], USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Residential Mortgage Loans Held In Securitization Trusts - Impaired Loans [Member] | Fair Value, Inputs, Level 3 [Member]
Note 13 - Fair Value of Financial Instruments (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]
Residential Mortgage loans held in securitization trusts – impaired loans (net)	$ 8,971	$ 6,591
Residential Mortgage Loans Held In Securitization Trusts - Impaired Loans [Member]
Note 13 - Fair Value of Financial Instruments (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]
Residential Mortgage loans held in securitization trusts – impaired loans (net)	8,971	6,591
Real Estate Owned Held in Residential Securitization Trusts [Member] | Fair Value, Inputs, Level 3 [Member]
Note 13 - Fair Value of Financial Instruments (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]
Real estate owned held in residential securitization trusts	669	1,108
Real Estate Owned Held in Residential Securitization Trusts [Member]
Note 13 - Fair Value of Financial Instruments (Details) - Assets Measured at Fair Value on a Nonrecurring Basis [Line Items]
Real estate owned held in residential securitization trusts	$ 669	$ 1,108