Quarterly report pursuant to Section 13 or 15(d)

REAL ESTATE RELATED LOANS, RESIDENTIAL MORTGAGE LOANS AND SUBPRIME MORTGAGE LOANS - Subprime Characteristics (Details 6)

v2.4.1.9
REAL ESTATE RELATED LOANS, RESIDENTIAL MORTGAGE LOANS AND SUBPRIME MORTGAGE LOANS - Subprime Characteristics (Details 6) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Loan unpaid principal balance (UPB) $ 748,513us-gaap_PrincipalAmountOutstandingOnLoansManagedAndSecuritized [1]
Debt Face Amount 1,286,504us-gaap_DebtInstrumentFaceAmount
Subprime Portfolio I [Member]  
Loan unpaid principal balance (UPB) 311,133us-gaap_PrincipalAmountOutstandingOnLoansManagedAndSecuritized
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= nct_SubprimePortfolioIMember 		[1]
Weighted Average Coupon 5.71%nct_CouponWeightedAverage
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= nct_SubprimePortfolioIMember
Delinquencies of 60 or more days (UPB) 73,706us-gaap_DelinquentAmountAtEndOfPeriodOnLoansManagedAndSecuritized
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= nct_SubprimePortfolioIMember 		[2]
Net credit losses 6,070us-gaap_NetCreditLossOnLoansManagedOrSecuritizedOrAssetbackedFinancingArrangement
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= nct_SubprimePortfolioIMember
Cumulative net credit losses 278,100nct_SubprimeCumulativeNetCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= nct_SubprimePortfolioIMember
Cumulative net credit losses as a % of original UPB 18.50%nct_SubprimeNetCreditLossesPercentageOriginalUPB
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= nct_SubprimePortfolioIMember
Percentage of ARM loans 50.50%nct_SubprimePercentageARMLoans
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= nct_SubprimePortfolioIMember 		[3]
Percentage of loans with original loan-to-value ratio >90% 10.60%nct_SubprimePercentageLoansWithHighLoanValueRatio
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= nct_SubprimePortfolioIMember
Percentage of interest-only loans 2.00%nct_SubprimePercentageInterestOnlyLoans
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= nct_SubprimePortfolioIMember
Debt Face Amount 307,133us-gaap_DebtInstrumentFaceAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= nct_SubprimePortfolioIMember 		[4]
Weighted average funding cost of debt 0.53%nct_SubprimeWeightedAverageFundingCostDebt
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= nct_SubprimePortfolioIMember 		[5]
Subprime Portfolio II [Member]  
Loan unpaid principal balance (UPB) 437,380us-gaap_PrincipalAmountOutstandingOnLoansManagedAndSecuritized
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= nct_SubprimePortfolioIIMember 		[1]
Weighted Average Coupon 4.63%nct_CouponWeightedAverage
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= nct_SubprimePortfolioIIMember
Delinquencies of 60 or more days (UPB) 150,239us-gaap_DelinquentAmountAtEndOfPeriodOnLoansManagedAndSecuritized
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= nct_SubprimePortfolioIIMember 		[2]
Net credit losses 5,147us-gaap_NetCreditLossOnLoansManagedOrSecuritizedOrAssetbackedFinancingArrangement
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= nct_SubprimePortfolioIIMember
Cumulative net credit losses 342,243nct_SubprimeCumulativeNetCreditLosses
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= nct_SubprimePortfolioIIMember
Cumulative net credit losses as a % of original UPB 31.50%nct_SubprimeNetCreditLossesPercentageOriginalUPB
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= nct_SubprimePortfolioIIMember
Percentage of ARM loans 63.80%nct_SubprimePercentageARMLoans
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= nct_SubprimePortfolioIIMember 		[3]
Percentage of loans with original loan-to-value ratio >90% 17.10%nct_SubprimePercentageLoansWithHighLoanValueRatio
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= nct_SubprimePortfolioIIMember
Percentage of interest-only loans 4.50%nct_SubprimePercentageInterestOnlyLoans
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= nct_SubprimePortfolioIIMember
Debt Face Amount $ 437,380us-gaap_DebtInstrumentFaceAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= nct_SubprimePortfolioIIMember 		[4]
Weighted average funding cost of debt 0.44%nct_SubprimeWeightedAverageFundingCostDebt
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= nct_SubprimePortfolioIIMember 		[5]
[1] Average loan seasoning of 116 months and 98 months for Subprime Portfolios I and II, respectively, at March 31, 2015.
[2] Delinquencies include loans 60 or more days past due, in foreclosure, under bankruptcy filing or REO.
[3] ARM loans are adjustable-rate mortgage loans. An option ARM is an adjustable-rate mortgage that provides the borrower with an option to choose from several payment amounts each month for a specified period of the loan term. None of the loans in the subprime portfolios are option ARMs.
[4] Excludes face amount of $4.0 million of retained notes for Subprime Portfolio I at March 31, 2015.
[5] Includes the effect of applicable hedges.