Quarterly report pursuant to Section 13 or 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Realized/unrealized loss on investments and other income (loss), net) (Details)

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Realized/unrealized loss on investments and other income (loss), net) (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Realized/unrealized (gain) loss on investments    
(Gain) on settlement of real estate securities $ 0 $ (5,917)
Loss on settlement of real estate securities 2,803 0
Unrealized loss on securities, intent-to-sell 558 0
Loss on repayment/disposition of loans held-for-sale 0 47
Realized (gain) loss on settlement of TBAs, net (2,474) 7,536
Unrealized loss on non-hedge derivative instruments 2,502 341
Realized/unrealized loss on investments 3,389 2,007
Other income (loss), net    
Loss on lease modifications and terminations (158) (60)
Loss on extinguishment of debt, net (146) (232)
Collateral management fee income, net 122 232
Equity in earnings of equity method investees 379 371
Gain (loss) on disposal of long-lived assets 26 (6)
Other (loss) income (346) 15
Other (loss) income, net $ (123) $ 320