Quarterly report pursuant to Section 13 or 15(d)

INVESTMENTS IN REAL ESTATE AND OTHER SECURITIES - Summary of Real Estate Securities in an Unrealized Loss Position - Associated Intent to Sell (Details)

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INVESTMENTS IN REAL ESTATE AND OTHER SECURITIES - Summary of Real Estate Securities in an Unrealized Loss Position - Associated Intent to Sell (Details)
6 Months Ended
Jun. 30, 2018
USD ($)
Debt Securities, Available-for-sale [Line Items]  
Unrealized losses reflected in other comprehensive income $ 0
Securities New Residential intends to sell  
Debt Securities, Available-for-sale [Line Items]  
Fair Value 95,719,000
Amortized Cost Basis After Impairment 95,719,000
Unrealized Credit Losses (5,077,000)
Unrealized Non-Credit Losses 0
Securities New Residential is more likely than not to be required to sell  
Debt Securities, Available-for-sale [Line Items]  
Fair Value 0
Amortized Cost Basis After Impairment 0
Unrealized Credit Losses 0
Credit impaired securities  
Debt Securities, Available-for-sale [Line Items]  
Fair Value 525,651,000
Amortized Cost Basis After Impairment 544,486,000
Unrealized Credit Losses (7,554,000)
Unrealized Non-Credit Losses (18,835,000)
Non-credit impaired securities  
Debt Securities, Available-for-sale [Line Items]  
Fair Value 1,209,232,000
Amortized Cost Basis After Impairment 1,245,090,000
Unrealized Credit Losses 0
Unrealized Non-Credit Losses (35,858,000)
Total debt securities in an unrealized loss position  
Debt Securities, Available-for-sale [Line Items]  
Fair Value 1,830,602,000
Amortized Cost Basis After Impairment 1,885,295,000
Unrealized Credit Losses (12,631,000)
Unrealized Non-Credit Losses $ (54,693,000)