| SEGMENT REPORTING AND VARIABLE INTEREST ENTITIES - Segment Reporting (Details) (USD $)In Thousands, unless otherwise specified
 | 3 Months Ended |  | 
      
        | Mar. 31, 2015 | Mar. 31, 2014 | Dec. 31, 2014 | 
      
        | Interest income, net | $ 27,078us-gaap_InterestAndDividendIncomeOperating |  | $ 46,452us-gaap_InterestAndDividendIncomeOperating |  |  | 
      
        | Interest expense, net | (16,727)us-gaap_InterestExpense |  | (22,170)us-gaap_InterestExpense |  |  | 
      
        | Net interest income | 10,351us-gaap_InterestIncomeExpenseNet |  | 24,282us-gaap_InterestIncomeExpenseNet |  |  | 
      
        | Impairment (reversal) | 405nct_ImpairmentNetOfTheReversalOfPriorValuationAllowancesOnLoans |  | 1,246nct_ImpairmentNetOfTheReversalOfPriorValuationAllowancesOnLoans |  |  | 
      
        | Operating revenues | 60,826us-gaap_OtherOperatingIncome |  | 62,632us-gaap_OtherOperatingIncome |  |  | 
      
        | Other income, net | 501us-gaap_NonoperatingGainsLosses |  | 15,808us-gaap_NonoperatingGainsLosses |  |  | 
      
        | Loan and security servicing expense | 96us-gaap_LoanPortfolioExpense |  | 857us-gaap_LoanPortfolioExpense |  |  | 
      
        | Operating expenses - golf | 52,971nct_CostOfOtherPropertyOperatingExpenseGolf | [1] | 57,129nct_CostOfOtherPropertyOperatingExpenseGolf | [1] |  | 
      
        | Repairs and maintenance expenses - golf | 1,966us-gaap_CostOfPropertyRepairsAndMaintenance |  | 2,518us-gaap_CostOfPropertyRepairsAndMaintenance |  |  | 
      
        | Cost of sales - golf | 6,053us-gaap_CostOfGoodsAndServicesSold |  | 5,956us-gaap_CostOfGoodsAndServicesSold |  |  | 
      
        | General and administrative expense | 1,677nct_GeneralAndAdministrativeExpense1 |  | 2,402nct_GeneralAndAdministrativeExpense1 |  |  | 
      
        | Acquisition and transaction expenses | 36nct_BusinessCombinationAcquisitionRelatedCosts1 | [2] | 1,162nct_BusinessCombinationAcquisitionRelatedCosts1 | [2] |  | 
      
        | Management fee to affiliate | 2,668nct_ManagementFeeToAffiliate |  | 5,893nct_ManagementFeeToAffiliate |  |  | 
      
        | Depreciation and amortization | 6,753us-gaap_DepreciationDepletionAndAmortization |  | 5,863us-gaap_DepreciationDepletionAndAmortization |  |  | 
      
        | Income tax expense | 46us-gaap_IncomeTaxExpenseBenefit |  | 140us-gaap_IncomeTaxExpenseBenefit |  |  | 
      
        | (Loss) income from continuing operations | (993)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest |  | 19,556us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest |  |  | 
      
        | income (loss) from discontinued operations, net of tax | 115us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity |  | (15,299)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity |  |  | 
      
        | Net (Loss) Income | (878)us-gaap_ProfitLoss |  | 4,257us-gaap_ProfitLoss |  |  | 
      
        | Preferred dividends | (1,395)us-gaap_PreferredStockDividendsIncomeStatementImpact |  | (1,395)us-gaap_PreferredStockDividendsIncomeStatementImpact |  |  | 
      
        | Net income (loss) attributable to noncontrolling interests | 181us-gaap_NetIncomeLossAttributableToNoncontrollingInterest |  | 661us-gaap_NetIncomeLossAttributableToNoncontrollingInterest |  |  | 
      
        | (Loss) Income Applicable to Common Stockholders | (2,092)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |  | 3,523us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |  |  | 
      
        | Investments, net | 1,591,118us-gaap_Investments | [3] |  |  |  | 
      
        | Cash and restricted cash | 77,876us-gaap_CashCashEquivalentsAndShortTermInvestments |  |  |  |  | 
      
        | Other assets | 37,448us-gaap_OtherAssetsNoncurrent |  |  |  |  | 
      
        | Assets of discontinued operations | 6,883us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation |  |  |  | 6,803us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation | 
      
        | Total Assets | 1,713,325us-gaap_Assets |  |  |  | 1,761,906us-gaap_Assets | 
      
        | Debt, net | 1,283,837us-gaap_DebtInstrumentCarryingAmount | [3] |  |  |  | 
      
        | Other liabilities | 182,390us-gaap_OtherLiabilities |  |  |  |  | 
      
        | Liabilities of discontinued operations | 502us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation |  |  |  | 447us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation | 
      
        | Total Liabilities | 1,466,729us-gaap_Liabilities |  |  |  | 1,503,578us-gaap_Liabilities | 
      
        | Preferred Stock | 61,583us-gaap_PreferredStockValue |  |  |  | 61,583us-gaap_PreferredStockValue | 
      
        | Noncontrolling interests | (145)us-gaap_MinorityInterest |  |  |  | 36us-gaap_MinorityInterest | 
      
        | Equity attributable to common stockholders | 185,158nct_GaapBookValue |  |  |  |  | 
      
        | Additions to investments in real estate | 385nct_AdditionsToInvestmentsInRealEstate |  |  |  |  | 
      
        | Inter-segment Elimination [Member] |  |  |  |  |  | 
      
        | Interest income, net | (1,478)us-gaap_InterestAndDividendIncomeOperating / us-gaap_ConsolidationItemsAxis
 = us-gaap_IntersegmentEliminationMember
 |  |  |  |  | 
      
        | Interest expense, net | 1,478us-gaap_InterestExpense / us-gaap_ConsolidationItemsAxis
 = us-gaap_IntersegmentEliminationMember
 |  |  |  |  | 
      
        | Investments, net | 36,600us-gaap_Investments / us-gaap_ConsolidationItemsAxis
 = us-gaap_IntersegmentEliminationMember
 |  |  |  |  | 
      
        | Discontinued Operations [Member] |  |  |  |  |  | 
      
        | Interest income, net |  |  | (1,274)us-gaap_InterestAndDividendIncomeOperating / us-gaap_StatementOperatingActivitiesSegmentAxis
 = us-gaap_SegmentDiscontinuedOperationsMember
 |  |  | 
      
        | Interest expense, net |  |  | 1,274us-gaap_InterestExpense / us-gaap_StatementOperatingActivitiesSegmentAxis
 = us-gaap_SegmentDiscontinuedOperationsMember
 |  |  | 
      
        | income (loss) from discontinued operations, net of tax | 115us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity / us-gaap_StatementOperatingActivitiesSegmentAxis
 = us-gaap_SegmentDiscontinuedOperationsMember
 |  | (15,299)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity / us-gaap_StatementOperatingActivitiesSegmentAxis
 = us-gaap_SegmentDiscontinuedOperationsMember
 |  |  | 
      
        | Net (Loss) Income | 115us-gaap_ProfitLoss / us-gaap_StatementOperatingActivitiesSegmentAxis
 = us-gaap_SegmentDiscontinuedOperationsMember
 |  | (15,299)us-gaap_ProfitLoss / us-gaap_StatementOperatingActivitiesSegmentAxis
 = us-gaap_SegmentDiscontinuedOperationsMember
 |  |  | 
      
        | Net income (loss) attributable to noncontrolling interests |  |  | 522us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / us-gaap_StatementOperatingActivitiesSegmentAxis
 = us-gaap_SegmentDiscontinuedOperationsMember
 |  |  | 
      
        | (Loss) Income Applicable to Common Stockholders | 115us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / us-gaap_StatementOperatingActivitiesSegmentAxis
 = us-gaap_SegmentDiscontinuedOperationsMember
 |  | (14,777)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / us-gaap_StatementOperatingActivitiesSegmentAxis
 = us-gaap_SegmentDiscontinuedOperationsMember
 |  |  | 
      
        | Assets of discontinued operations | 6,883us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation / us-gaap_StatementOperatingActivitiesSegmentAxis
 = us-gaap_SegmentDiscontinuedOperationsMember
 |  |  |  |  | 
      
        | Total Assets | 6,883us-gaap_Assets / us-gaap_StatementOperatingActivitiesSegmentAxis
 = us-gaap_SegmentDiscontinuedOperationsMember
 |  |  |  |  | 
      
        | Liabilities of discontinued operations | 502us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation / us-gaap_StatementOperatingActivitiesSegmentAxis
 = us-gaap_SegmentDiscontinuedOperationsMember
 |  |  |  |  | 
      
        | Total Liabilities | 502us-gaap_Liabilities / us-gaap_StatementOperatingActivitiesSegmentAxis
 = us-gaap_SegmentDiscontinuedOperationsMember
 |  |  |  |  | 
      
        | Equity attributable to common stockholders | 6,381nct_GaapBookValue / us-gaap_StatementOperatingActivitiesSegmentAxis
 = us-gaap_SegmentDiscontinuedOperationsMember
 |  |  |  |  | 
      
        | CDOs [Member] |  |  |  |  |  | 
      
        | Interest income, net | 15,922us-gaap_InterestAndDividendIncomeOperating / us-gaap_StatementBusinessSegmentsAxis
 = nct_CollateralizedLoanObligationsSegmentMember
 | [4] | 30,722us-gaap_InterestAndDividendIncomeOperating / us-gaap_StatementBusinessSegmentsAxis
 = nct_CollateralizedLoanObligationsSegmentMember
 | [4] |  | 
      
        | Interest expense, net | (2,583)us-gaap_InterestExpense / us-gaap_StatementBusinessSegmentsAxis
 = nct_CollateralizedLoanObligationsSegmentMember
 | [4] | (6,128)us-gaap_InterestExpense / us-gaap_StatementBusinessSegmentsAxis
 = nct_CollateralizedLoanObligationsSegmentMember
 | [4] |  | 
      
        | Inter-segment eliminations | (1,478)nct_IntersegmentEliminationInterestIncomeExpenseNet / us-gaap_StatementBusinessSegmentsAxis
 = nct_CollateralizedLoanObligationsSegmentMember
 | [4] | (1,274)nct_IntersegmentEliminationInterestIncomeExpenseNet / us-gaap_StatementBusinessSegmentsAxis
 = nct_CollateralizedLoanObligationsSegmentMember
 | [4] |  | 
      
        | Net interest income | 11,861us-gaap_InterestIncomeExpenseNet / us-gaap_StatementBusinessSegmentsAxis
 = nct_CollateralizedLoanObligationsSegmentMember
 | [4] | 23,320us-gaap_InterestIncomeExpenseNet / us-gaap_StatementBusinessSegmentsAxis
 = nct_CollateralizedLoanObligationsSegmentMember
 | [4] |  | 
      
        | Impairment (reversal) | 337nct_ImpairmentNetOfTheReversalOfPriorValuationAllowancesOnLoans / us-gaap_StatementBusinessSegmentsAxis
 = nct_CollateralizedLoanObligationsSegmentMember
 | [4] | 432nct_ImpairmentNetOfTheReversalOfPriorValuationAllowancesOnLoans / us-gaap_StatementBusinessSegmentsAxis
 = nct_CollateralizedLoanObligationsSegmentMember
 | [4] |  | 
      
        | Other income, net | 530us-gaap_NonoperatingGainsLosses / us-gaap_StatementBusinessSegmentsAxis
 = nct_CollateralizedLoanObligationsSegmentMember
 | [4] | 13,610us-gaap_NonoperatingGainsLosses / us-gaap_StatementBusinessSegmentsAxis
 = nct_CollateralizedLoanObligationsSegmentMember
 | [4] |  | 
      
        | Loan and security servicing expense | 96us-gaap_LoanPortfolioExpense / us-gaap_StatementBusinessSegmentsAxis
 = nct_CollateralizedLoanObligationsSegmentMember
 | [4] | 156us-gaap_LoanPortfolioExpense / us-gaap_StatementBusinessSegmentsAxis
 = nct_CollateralizedLoanObligationsSegmentMember
 | [4] |  | 
      
        | (Loss) income from continuing operations | 11,958us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis
 = nct_CollateralizedLoanObligationsSegmentMember
 | [4] | 36,342us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis
 = nct_CollateralizedLoanObligationsSegmentMember
 | [4] |  | 
      
        | income (loss) from discontinued operations, net of tax |  | [4] |  |  |  | 
      
        | Net (Loss) Income | 11,958us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis
 = nct_CollateralizedLoanObligationsSegmentMember
 | [4] | 36,342us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis
 = nct_CollateralizedLoanObligationsSegmentMember
 | [4] |  | 
      
        | (Loss) Income Applicable to Common Stockholders | 11,958us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / us-gaap_StatementBusinessSegmentsAxis
 = nct_CollateralizedLoanObligationsSegmentMember
 | [4] | 36,342us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / us-gaap_StatementBusinessSegmentsAxis
 = nct_CollateralizedLoanObligationsSegmentMember
 | [4] |  | 
      
        | Investments, net | 440,436us-gaap_Investments / us-gaap_StatementBusinessSegmentsAxis
 = nct_CollateralizedLoanObligationsSegmentMember
 | [3],[4] |  |  |  | 
      
        | Cash and restricted cash | 14,149us-gaap_CashCashEquivalentsAndShortTermInvestments / us-gaap_StatementBusinessSegmentsAxis
 = nct_CollateralizedLoanObligationsSegmentMember
 | [4] |  |  |  | 
      
        | Other assets | 1,575us-gaap_OtherAssetsNoncurrent / us-gaap_StatementBusinessSegmentsAxis
 = nct_CollateralizedLoanObligationsSegmentMember
 | [4] |  |  |  | 
      
        | Total Assets | 456,160us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis
 = nct_CollateralizedLoanObligationsSegmentMember
 | [4] |  |  |  | 
      
        | Debt, net | 277,464us-gaap_DebtInstrumentCarryingAmount / us-gaap_StatementBusinessSegmentsAxis
 = nct_CollateralizedLoanObligationsSegmentMember
 | [3],[4] |  |  |  | 
      
        | Other liabilities | 1,386us-gaap_OtherLiabilities / us-gaap_StatementBusinessSegmentsAxis
 = nct_CollateralizedLoanObligationsSegmentMember
 | [4] |  |  |  | 
      
        | Total Liabilities | 278,850us-gaap_Liabilities / us-gaap_StatementBusinessSegmentsAxis
 = nct_CollateralizedLoanObligationsSegmentMember
 | [4] |  |  |  | 
      
        | Equity attributable to common stockholders | 177,310nct_GaapBookValue / us-gaap_StatementBusinessSegmentsAxis
 = nct_CollateralizedLoanObligationsSegmentMember
 | [4] |  |  |  | 
      
        | Other Debt [Member] |  |  |  |  |  | 
      
        | Interest income, net | 12,595us-gaap_InterestAndDividendIncomeOperating / us-gaap_StatementBusinessSegmentsAxis
 = nct_OtherDebtSegmentMember
 | [4] | 16,952us-gaap_InterestAndDividendIncomeOperating / us-gaap_StatementBusinessSegmentsAxis
 = nct_OtherDebtSegmentMember
 | [4] |  | 
      
        | Interest expense, net | (9,579)us-gaap_InterestExpense / us-gaap_StatementBusinessSegmentsAxis
 = nct_OtherDebtSegmentMember
 | [4] | (12,663)us-gaap_InterestExpense / us-gaap_StatementBusinessSegmentsAxis
 = nct_OtherDebtSegmentMember
 | [4] |  | 
      
        | Inter-segment eliminations |  |  | 1,274nct_IntersegmentEliminationInterestIncomeExpenseNet / us-gaap_StatementBusinessSegmentsAxis
 = nct_OtherDebtSegmentMember
 | [4] |  | 
      
        | Net interest income | 3,016us-gaap_InterestIncomeExpenseNet / us-gaap_StatementBusinessSegmentsAxis
 = nct_OtherDebtSegmentMember
 | [4] | 5,563us-gaap_InterestIncomeExpenseNet / us-gaap_StatementBusinessSegmentsAxis
 = nct_OtherDebtSegmentMember
 | [4] |  | 
      
        | Impairment (reversal) | 68nct_ImpairmentNetOfTheReversalOfPriorValuationAllowancesOnLoans / us-gaap_StatementBusinessSegmentsAxis
 = nct_OtherDebtSegmentMember
 | [4] | 814nct_ImpairmentNetOfTheReversalOfPriorValuationAllowancesOnLoans / us-gaap_StatementBusinessSegmentsAxis
 = nct_OtherDebtSegmentMember
 | [4] |  | 
      
        | Other income, net | (37)us-gaap_NonoperatingGainsLosses / us-gaap_StatementBusinessSegmentsAxis
 = nct_OtherDebtSegmentMember
 | [4] | 2,198us-gaap_NonoperatingGainsLosses / us-gaap_StatementBusinessSegmentsAxis
 = nct_OtherDebtSegmentMember
 | [4] |  | 
      
        | Loan and security servicing expense |  |  | 701us-gaap_LoanPortfolioExpense / us-gaap_StatementBusinessSegmentsAxis
 = nct_OtherDebtSegmentMember
 | [4] |  | 
      
        | (Loss) income from continuing operations | 2,911us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis
 = nct_OtherDebtSegmentMember
 | [4] | 6,246us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis
 = nct_OtherDebtSegmentMember
 | [4] |  | 
      
        | income (loss) from discontinued operations, net of tax |  | [4] |  |  |  | 
      
        | Net (Loss) Income | 2,911us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis
 = nct_OtherDebtSegmentMember
 | [4] | 6,246us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis
 = nct_OtherDebtSegmentMember
 | [4] |  | 
      
        | (Loss) Income Applicable to Common Stockholders | 2,911us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / us-gaap_StatementBusinessSegmentsAxis
 = nct_OtherDebtSegmentMember
 | [4] | 6,246us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / us-gaap_StatementBusinessSegmentsAxis
 = nct_OtherDebtSegmentMember
 | [4] |  | 
      
        | Investments, net | 834,633us-gaap_Investments / us-gaap_StatementBusinessSegmentsAxis
 = nct_OtherDebtSegmentMember
 | [3],[4] |  |  |  | 
      
        | Cash and restricted cash | 3,778us-gaap_CashCashEquivalentsAndShortTermInvestments / us-gaap_StatementBusinessSegmentsAxis
 = nct_OtherDebtSegmentMember
 | [4] |  |  |  | 
      
        | Other assets | 2,100us-gaap_OtherAssetsNoncurrent / us-gaap_StatementBusinessSegmentsAxis
 = nct_OtherDebtSegmentMember
 | [4] |  |  |  | 
      
        | Total Assets | 840,511us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis
 = nct_OtherDebtSegmentMember
 | [4] |  |  |  | 
      
        | Debt, net | 792,337us-gaap_DebtInstrumentCarryingAmount / us-gaap_StatementBusinessSegmentsAxis
 = nct_OtherDebtSegmentMember
 | [3],[4] |  |  |  | 
      
        | Other liabilities | 6,352us-gaap_OtherLiabilities / us-gaap_StatementBusinessSegmentsAxis
 = nct_OtherDebtSegmentMember
 | [4] |  |  |  | 
      
        | Total Liabilities | 798,689us-gaap_Liabilities / us-gaap_StatementBusinessSegmentsAxis
 = nct_OtherDebtSegmentMember
 | [4] |  |  |  | 
      
        | Equity attributable to common stockholders | 41,822nct_GaapBookValue / us-gaap_StatementBusinessSegmentsAxis
 = nct_OtherDebtSegmentMember
 | [4] |  |  |  | 
      
        | Golf |  |  |  |  |  | 
      
        | Interest income, net | 35us-gaap_InterestAndDividendIncomeOperating / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  | 41us-gaap_InterestAndDividendIncomeOperating / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  |  | 
      
        | Interest expense, net | (5,097)us-gaap_InterestExpense / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  | (3,698)us-gaap_InterestExpense / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  |  | 
      
        | Inter-segment eliminations | 1,478nct_IntersegmentEliminationInterestIncomeExpenseNet / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  |  |  |  | 
      
        | Net interest income | (3,584)us-gaap_InterestIncomeExpenseNet / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  | (3,657)us-gaap_InterestIncomeExpenseNet / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  |  | 
      
        | Operating revenues | 60,826us-gaap_OtherOperatingIncome / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  | 62,632us-gaap_OtherOperatingIncome / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  |  | 
      
        | Other income, net | 8us-gaap_NonoperatingGainsLosses / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  |  |  |  | 
      
        | Operating expenses - golf | 52,971nct_CostOfOtherPropertyOperatingExpenseGolf / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 | [1] | 57,129nct_CostOfOtherPropertyOperatingExpenseGolf / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 | [1] |  | 
      
        | Repairs and maintenance expenses - golf | 1,966us-gaap_CostOfPropertyRepairsAndMaintenance / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  | 2,518us-gaap_CostOfPropertyRepairsAndMaintenance / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  |  | 
      
        | Cost of sales - golf | 6,053us-gaap_CostOfGoodsAndServicesSold / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  | 5,956us-gaap_CostOfGoodsAndServicesSold / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  |  | 
      
        | General and administrative expense | 249nct_GeneralAndAdministrativeExpense1 / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  | 307nct_GeneralAndAdministrativeExpense1 / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  |  | 
      
        | Acquisition and transaction expenses | 36nct_BusinessCombinationAcquisitionRelatedCosts1 / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 | [2] | 775nct_BusinessCombinationAcquisitionRelatedCosts1 / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 | [2] |  | 
      
        | Depreciation and amortization | 6,753us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  | 5,826us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  |  | 
      
        | Income tax expense | 46us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  | 140us-gaap_IncomeTaxExpenseBenefit / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  |  | 
      
        | (Loss) income from continuing operations | (10,824)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  | (13,676)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  |  | 
      
        | income (loss) from discontinued operations, net of tax |  |  |  |  |  | 
      
        | Net (Loss) Income | (10,824)us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  | (13,676)us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  |  | 
      
        | Net income (loss) attributable to noncontrolling interests | 181us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  | 139us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  |  | 
      
        | (Loss) Income Applicable to Common Stockholders | (10,643)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  | (13,537)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  |  | 
      
        | Investments, net | 316,049us-gaap_Investments / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 | [3] |  |  |  | 
      
        | Cash and restricted cash | 11,933us-gaap_CashCashEquivalentsAndShortTermInvestments / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  |  |  |  | 
      
        | Other assets | 33,637us-gaap_OtherAssetsNoncurrent / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  |  |  |  | 
      
        | Total Assets | 361,619us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  |  |  |  | 
      
        | Debt, net | 162,806us-gaap_DebtInstrumentCarryingAmount / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 | [3] |  |  |  | 
      
        | Other liabilities | 158,406us-gaap_OtherLiabilities / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  |  |  |  | 
      
        | Total Liabilities | 321,212us-gaap_Liabilities / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  |  |  |  | 
      
        | Noncontrolling interests | (145)us-gaap_MinorityInterest / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  |  |  |  | 
      
        | Equity attributable to common stockholders | 40,552nct_GaapBookValue / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  |  |  |  | 
      
        | Additions to investments in real estate | 385nct_AdditionsToInvestmentsInRealEstate / us-gaap_StatementBusinessSegmentsAxis
 = nct_GolfBusinessSegmentMember
 |  |  |  |  | 
      
        | Corporate [Member] |  |  |  |  |  | 
      
        | Interest income, net | 4us-gaap_InterestAndDividendIncomeOperating / us-gaap_StatementBusinessSegmentsAxis
 = us-gaap_CorporateMember
 |  | 11us-gaap_InterestAndDividendIncomeOperating / us-gaap_StatementBusinessSegmentsAxis
 = us-gaap_CorporateMember
 |  |  | 
      
        | Interest expense, net | (946)us-gaap_InterestExpense / us-gaap_StatementBusinessSegmentsAxis
 = us-gaap_CorporateMember
 |  | (955)us-gaap_InterestExpense / us-gaap_StatementBusinessSegmentsAxis
 = us-gaap_CorporateMember
 |  |  | 
      
        | Net interest income | (942)us-gaap_InterestIncomeExpenseNet / us-gaap_StatementBusinessSegmentsAxis
 = us-gaap_CorporateMember
 |  | (944)us-gaap_InterestIncomeExpenseNet / us-gaap_StatementBusinessSegmentsAxis
 = us-gaap_CorporateMember
 |  |  | 
      
        | General and administrative expense | 1,428nct_GeneralAndAdministrativeExpense1 / us-gaap_StatementBusinessSegmentsAxis
 = us-gaap_CorporateMember
 |  | 2,095nct_GeneralAndAdministrativeExpense1 / us-gaap_StatementBusinessSegmentsAxis
 = us-gaap_CorporateMember
 |  |  | 
      
        | Acquisition and transaction expenses |  |  | 387nct_BusinessCombinationAcquisitionRelatedCosts1 / us-gaap_StatementBusinessSegmentsAxis
 = us-gaap_CorporateMember
 | [2] |  | 
      
        | Management fee to affiliate | 2,668nct_ManagementFeeToAffiliate / us-gaap_StatementBusinessSegmentsAxis
 = us-gaap_CorporateMember
 |  | 5,893nct_ManagementFeeToAffiliate / us-gaap_StatementBusinessSegmentsAxis
 = us-gaap_CorporateMember
 |  |  | 
      
        | Depreciation and amortization |  |  | 37us-gaap_DepreciationDepletionAndAmortization / us-gaap_StatementBusinessSegmentsAxis
 = us-gaap_CorporateMember
 |  |  | 
      
        | (Loss) income from continuing operations | (5,038)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis
 = us-gaap_CorporateMember
 |  | (9,356)us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementBusinessSegmentsAxis
 = us-gaap_CorporateMember
 |  |  | 
      
        | income (loss) from discontinued operations, net of tax |  |  |  |  |  | 
      
        | Net (Loss) Income | (5,038)us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis
 = us-gaap_CorporateMember
 |  | (9,356)us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis
 = us-gaap_CorporateMember
 |  |  | 
      
        | Preferred dividends | (1,395)us-gaap_PreferredStockDividendsIncomeStatementImpact / us-gaap_StatementBusinessSegmentsAxis
 = us-gaap_CorporateMember
 |  | (1,395)us-gaap_PreferredStockDividendsIncomeStatementImpact / us-gaap_StatementBusinessSegmentsAxis
 = us-gaap_CorporateMember
 |  |  | 
      
        | (Loss) Income Applicable to Common Stockholders | (6,433)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / us-gaap_StatementBusinessSegmentsAxis
 = us-gaap_CorporateMember
 |  | (10,751)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / us-gaap_StatementBusinessSegmentsAxis
 = us-gaap_CorporateMember
 |  |  | 
      
        | Cash and restricted cash | 48,016us-gaap_CashCashEquivalentsAndShortTermInvestments / us-gaap_StatementBusinessSegmentsAxis
 = us-gaap_CorporateMember
 |  |  |  |  | 
      
        | Other assets | 136us-gaap_OtherAssetsNoncurrent / us-gaap_StatementBusinessSegmentsAxis
 = us-gaap_CorporateMember
 |  |  |  |  | 
      
        | Total Assets | 48,152us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis
 = us-gaap_CorporateMember
 |  |  |  |  | 
      
        | Debt, net | 51,230us-gaap_DebtInstrumentCarryingAmount / us-gaap_StatementBusinessSegmentsAxis
 = us-gaap_CorporateMember
 | [3] |  |  |  | 
      
        | Other liabilities | 16,246us-gaap_OtherLiabilities / us-gaap_StatementBusinessSegmentsAxis
 = us-gaap_CorporateMember
 |  |  |  |  | 
      
        | Total Liabilities | 67,476us-gaap_Liabilities / us-gaap_StatementBusinessSegmentsAxis
 = us-gaap_CorporateMember
 |  |  |  |  | 
      
        | Preferred Stock | 61,583us-gaap_PreferredStockValue / us-gaap_StatementBusinessSegmentsAxis
 = us-gaap_CorporateMember
 |  |  |  |  | 
      
        | Equity attributable to common stockholders | $ (80,907)nct_GaapBookValue / us-gaap_StatementBusinessSegmentsAxis
 = us-gaap_CorporateMember
 |  |  |  |  | 
      
        |  | 
      
        |  |