Quarterly report pursuant to Section 13 or 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Unconsolidated VIE) (Details)

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Unconsolidated VIE) (Details)
Jun. 30, 2016
USD ($)
Variable Interest Entity [Line Items]  
Outstanding face amount $ 891,783,000
Variable Interest Entity, Primary Beneficiary | Newcastle CDO V  
Variable Interest Entity [Line Items]  
Gross Assets 78,890,000
Debt 106,086,000
Carrying Value of Newcastle's Investment 9,910,000
Outstanding face amount 45,200,000.0
Variable Interest Entity, Primary Beneficiary | Newcastle CDO VI  
Variable Interest Entity [Line Items]  
Gross Assets 53,089,000
Debt 180,213,000
Carrying Value of Newcastle's Investment 0
Outstanding face amount $ 76,500,000.0