Note 5 - Distressed Residential Mortgage Loans (Tables)
12 Months Ended
Dec. 31, 2013
Note 5 - Distressed Residential Mortgage Loans (Tables) [Line Items]  
Schedule of Additional Information of Distressed Residential Mortgage Loans Acquired [Table Text Block]
   

December 31,

2013

   

December 31

2012

 

Contractually required principal and interest

  $ 368,571     $ 174,746  

Non-accretable yield

    (47,453

)

    (21,614

)

Expected cash flows to be collected

    321,118       153,132  

Accretable yield

    (102,952

)

    (91,737

)

Fair value at the date of acquisition

  $ 218,166     $ 61,395  
Schedule of Distressed Residential Mortgage Loans Activity [Table Text Block]
   

December 31,

2013

   

December 31,

2012

 

Balance at beginning of period

  $ 91,252     $  

Additions

    102,952       91,737  

Disposals

    (11,223

)

    (53

)

Accretion

    (11,741

)

    (432

)

Allowance for loan losses

    (128

)

     

Balance at end of period (1)

  $ 171,112     $ 91,252  
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]
   

December 31,

2013

   

December 31,

2012

 

New York

    35.9 %     37.8

%

Massachusetts

    24.6 %     25.2

%

New Jersey

    10.4 %     9.5

%

Florida

    5.8 %     5.1

%

Connecticut

    5.6 %     5.0

%

Residential Distressed Mortgage Loans Held in Securitization Trust [Member]
 
Note 5 - Distressed Residential Mortgage Loans (Tables) [Line Items]  
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]
   

December 31,

2013

   

December 31,

2012

 

California

    14.4 %     24.1

%

Florida

    8.3 %     6.5

%

New York

    8.1 %     3.9

%

Texas

    6.6 %     7.0

%

Maryland

    3.1 %     5.5

%