Annual report pursuant to Section 13 and 15(d)

REAL ESTATE SECURITIES - Holdings in an Unrealized Loss Position and the Associated Intent to Sell (Details)

v3.6.0.2
REAL ESTATE SECURITIES - Holdings in an Unrealized Loss Position and the Associated Intent to Sell (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Investment [Line Items]      
Realized/unrealized gain on investments $ (685) $ 22,264 $ 69,593
Securities Drive Shack Inc. intends to sell      
Investment [Line Items]      
Fair Value 627,304    
Amortized Cost Basis 627,304    
Unrealized Credit Losses 0    
Securities Drive Shack Inc. is more likely than not to be required to sell      
Investment [Line Items]      
Fair Value 0    
Amortized Cost Basis 0    
Unrealized Credit Losses 0    
Credit impaired securities      
Investment [Line Items]      
Fair Value 0    
Amortized Cost Basis 0    
Unrealized Credit Losses 0    
Unrealized Non-Credit Losses 0    
Non-credit impaired securities      
Investment [Line Items]      
Fair Value 0    
Amortized Cost Basis 0    
Unrealized Credit Losses 0    
Unrealized Non-Credit Losses 0    
Total debt securities in an unrealized loss position      
Investment [Line Items]      
Fair Value 627,304    
Amortized Cost Basis 627,304    
Unrealized Credit Losses 0    
Unrealized Non-Credit Losses 0    
Real Estate Securities | Reclassification from AOCI into net income | Unrealized loss on real estate securities, intent-to-sell, reclassified from AOCI into income      
Investment [Line Items]      
Realized/unrealized gain on investments $ (23,128) $ 0 $ 0