Annual report pursuant to Section 13 and 15(d)

TRANSACTIONS WITH AFFILIATES AND AFFILIATED ENTITIES - Narrative (Details)

v3.6.0.2
TRANSACTIONS WITH AFFILIATES AND AFFILIATED ENTITIES - Narrative (Details)
$ in Thousands
 1 Months Ended 12 Months Ended
Sep. 30, 2016
USD ($)
Apr. 30, 2010
USD ($)
security
Dec. 31, 2016
USD ($)
shares
Dec. 31, 2015
USD ($)
shares
Dec. 31, 2014
USD ($)
Related Party Transaction [Line Items]          
Lease term     1 year    
Period management fee earned     12 months    
Manager advisory fee (as percent)     1.50%    
Incentive compensation percentage (as percent)     25.00%    
Simple interest rate in incentive calculation (as percent)     10.00%    
Shares held by Fortress and affiliates in Newcastle (in shares) | shares     4,100,000    
Stock options outstanding (in shares) | shares     5,126,906 5,421,561  
Due to affiliates     $ 892 $ 892  
Cash investments made in affiliates or related companies   $ 75,000      
Expected yield (as percent)   22.50%      
Proceeds from notes receivable $ 109,900        
Interest income     91,291 95,891 $ 127,627
Amount payable to aircraft operator for aircraft charter     $ 100 100  
Affiliates          
Related Party Transaction [Line Items]          
Stock options outstanding (in shares) | shares     5,100,000    
Loan to affiliate     $ 61,000    
Interest income     $ 29,000 $ 25,800 $ 20,000
CDO          
Related Party Transaction [Line Items]          
Number of Securities | security   2      
Subprime Portfolio II          
Related Party Transaction [Line Items]          
Servicing fee percentage (as percent)     0.50%    
Subprime Mortgage Loans Subject to Call Option | Subprime Portfolio I          
Related Party Transaction [Line Items]          
Servicing fee percentage (as percent)     0.50%    
Loan unpaid principal balance     $ 237,600    
Subprime Mortgage Loans Subject to Call Option | Subprime Portfolio II          
Related Party Transaction [Line Items]          
Loan unpaid principal balance     $ 349,800