XML 123 R107.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Segment Reporting (Schedule of Segments) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 segments | Dec. 31, 2013 | Dec. 31, 2012
Segment Reporting |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of reportable segments |  |  |  |  |  |  |  |  |  |  | 4us-gaap_NumberOfReportableSegments |  |  |  |  |
Operating lease income |  |  |  |  |  |  |  |  |  |  | $ 243,100us-gaap_OperatingLeasesIncomeStatementLeaseRevenue |  | $ 234,567us-gaap_OperatingLeasesIncomeStatementLeaseRevenue |  | $ 216,291us-gaap_OperatingLeasesIncomeStatementLeaseRevenue |
Interest income |  |  |  |  |  |  |  |  |  |  | 122,704us-gaap_InterestAndFeeIncomeLoansCommercial |  | 108,015us-gaap_InterestAndFeeIncomeLoansCommercial |  | 133,410us-gaap_InterestAndFeeIncomeLoansCommercial |
Other income |  |  |  |  |  |  |  |  |  |  | 81,033us-gaap_OtherIncome |  | 48,208us-gaap_OtherIncome |  | 47,838us-gaap_OtherIncome |
Land sales revenue |  |  |  |  |  |  |  |  |  |  | 15,191us-gaap_LandSales |  | 0us-gaap_LandSales |  | 0us-gaap_LandSales |
Total revenues | 109,950us-gaap_Revenues |  | 113,486us-gaap_Revenues | 129,843us-gaap_Revenues | 108,749us-gaap_Revenues | 101,073us-gaap_Revenues |  | 95,696us-gaap_Revenues | 99,919us-gaap_Revenues | 94,102us-gaap_Revenues | 462,028us-gaap_Revenues |  | 390,790us-gaap_Revenues |  | 397,539us-gaap_Revenues |
Earnings (loss) from equity method investments |  |  |  |  |  |  |  |  |  |  | 94,905us-gaap_IncomeLossFromEquityMethodInvestments |  | 41,520us-gaap_IncomeLossFromEquityMethodInvestments |  | 103,009us-gaap_IncomeLossFromEquityMethodInvestments |
Income from sales of real estate |  |  |  |  |  |  |  |  |  |  | 89,943us-gaap_GainLossOnSaleOfProperties |  | 86,658us-gaap_GainLossOnSaleOfProperties |  | 63,472us-gaap_GainLossOnSaleOfProperties |
Income (loss) from discontinued operations |  |  |  |  |  |  |  |  |  |  |  |  | 2,735star_NetOperatingIncomeFromDiscontinuedOperations | [1] | 8,175star_NetOperatingIncomeFromDiscontinuedOperations | [1]
Gain from discontinued operations |  |  |  |  |  |  |  |  |  |  | 0us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax |  | 22,233us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax |  | 27,257us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax |
Revenue and other earnings |  |  |  |  |  |  |  |  |  |  | 646,876star_RevenueAndOtherEarnings |  | 543,936star_RevenueAndOtherEarnings |  | 599,452star_RevenueAndOtherEarnings |
Real estate expense |  |  |  |  |  |  |  |  |  |  | (163,389)star_CostOfRealEstateHeldForSaleAndOtherRealEstateOwned |  | (157,441)star_CostOfRealEstateHeldForSaleAndOtherRealEstateOwned |  | (151,458)star_CostOfRealEstateHeldForSaleAndOtherRealEstateOwned |
Land cost of sales |  |  |  |  |  |  |  |  |  |  | (12,840)star_CostsofLandSales |  | 0star_CostsofLandSales |  | 0star_CostsofLandSales |
Other expense |  |  |  |  |  |  |  |  |  |  | (5,821)us-gaap_OtherExpenses |  | (8,050)us-gaap_OtherExpenses |  | (17,266)us-gaap_OtherExpenses |
Allocated interest expense |  |  |  |  |  |  |  |  |  |  | (224,483)star_InterestExpenseIncludingDiscontinuedOperations |  | (266,225)star_InterestExpenseIncludingDiscontinuedOperations | [2] | (356,161)star_InterestExpenseIncludingDiscontinuedOperations | [2]
Allocated general and administrative |  |  |  |  |  |  |  |  |  |  | (75,492)star_GeneralAndAdministrativeExpenseExcludingStockBasedCompensationExpense | [3] | (72,853)star_GeneralAndAdministrativeExpenseExcludingStockBasedCompensationExpense | [3] | (65,563)star_GeneralAndAdministrativeExpenseExcludingStockBasedCompensationExpense | [3]
Segment profit (loss) |  |  |  |  |  |  |  |  |  |  | 164,851star_SegmentProfitLoss | [4] | 39,367star_SegmentProfitLoss | [4] | 9,004star_SegmentProfitLoss | [4]
Provision for (recovery of) loan losses |  |  |  |  |  |  |  |  |  |  | (1,714)us-gaap_ProvisionForLoanLossesExpensed | [5] | 5,489us-gaap_ProvisionForLoanLossesExpensed | [5] | 81,740us-gaap_ProvisionForLoanLossesExpensed | [5]
Impairment of assets |  |  |  |  |  |  |  |  |  |  | 34,634star_AssetImpairmentChargesIncludingDiscontinuedOperations |  | 14,353star_AssetImpairmentChargesIncludingDiscontinuedOperations | [2] | 36,354star_AssetImpairmentChargesIncludingDiscontinuedOperations | [2]
Loss on transfer of interest to unconsolidated subsidiary |  |  |  |  |  |  |  |  |  |  | 0star_GainLossonTransfertoUnconsolidatedSubsidiary |  | 7,373star_GainLossonTransfertoUnconsolidatedSubsidiary |  | 0star_GainLossonTransfertoUnconsolidatedSubsidiary |
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  | 73,571star_DepreciationAndAmortizationIncludingDiscontinuedOperations |  | 71,530star_DepreciationAndAmortizationIncludingDiscontinuedOperations | [2] | 70,786star_DepreciationAndAmortizationIncludingDiscontinuedOperations | [2]
Capitalized expenditures |  |  |  |  |  |  |  |  |  |  | 145,238star_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisition |  | 111,553star_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisition |  | 83,070star_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisition |
Real estate, net | 2,676,714star_RealEstateInvestmentPropertyHeldForUseNet |  |  |  |  | 2,796,181star_RealEstateInvestmentPropertyHeldForUseNet |  |  |  |  | 2,676,714star_RealEstateInvestmentPropertyHeldForUseNet |  | 2,796,181star_RealEstateInvestmentPropertyHeldForUseNet |  |  |
Real estate available and held for sale | 285,982star_RealEstateAvailableAndHeldForSale |  |  |  |  | 360,517star_RealEstateAvailableAndHeldForSale |  |  |  |  | 285,982star_RealEstateAvailableAndHeldForSale |  | 360,517star_RealEstateAvailableAndHeldForSale |  |  |
Total real estate | 2,962,696us-gaap_RealEstateInvestmentPropertyNet |  |  |  |  | 3,156,698us-gaap_RealEstateInvestmentPropertyNet |  |  |  |  | 2,962,696us-gaap_RealEstateInvestmentPropertyNet |  | 3,156,698us-gaap_RealEstateInvestmentPropertyNet |  |  |
Loans receivable and other lending investments, net | 1,377,843star_LoansAndOtherLendingInvestments | [6] |  |  |  | 1,370,109star_LoansAndOtherLendingInvestments | [6] |  |  |  | 1,377,843star_LoansAndOtherLendingInvestments | [6] | 1,370,109star_LoansAndOtherLendingInvestments | [6] |  |
Other investments | 354,119us-gaap_OtherInvestments |  |  |  |  | 207,209us-gaap_OtherInvestments |  |  |  |  | 354,119us-gaap_OtherInvestments |  | 207,209us-gaap_OtherInvestments |  |  |
Total portfolio assets | 4,694,658star_PortfolioAssets |  |  |  |  | 4,734,016star_PortfolioAssets |  |  |  |  | 4,694,658star_PortfolioAssets |  | 4,734,016star_PortfolioAssets |  |  |
Cash and other assets | 768,475star_CashAndOtherAssets |  |  |  |  | 907,995star_CashAndOtherAssets |  |  |  |  | 768,475star_CashAndOtherAssets |  | 907,995star_CashAndOtherAssets |  |  |
Total assets | 5,463,133us-gaap_Assets |  |  |  |  | 5,642,011us-gaap_Assets |  |  |  |  | 5,463,133us-gaap_Assets |  | 5,642,011us-gaap_Assets |  |  |
Stock-based compensation expense |  |  |  |  |  |  |  |  |  |  | 13,314us-gaap_AllocatedShareBasedCompensationExpense |  | 19,261us-gaap_AllocatedShareBasedCompensationExpense |  | 15,293us-gaap_AllocatedShareBasedCompensationExpense |
Operating Segments | Real Estate Finance |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating lease income |  |  |  |  |  |  |  |  |  |  | 0us-gaap_OperatingLeasesIncomeStatementLeaseRevenue / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  | 0us-gaap_OperatingLeasesIncomeStatementLeaseRevenue / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  | 0us-gaap_OperatingLeasesIncomeStatementLeaseRevenue / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |
Interest income |  |  |  |  |  |  |  |  |  |  | 122,704us-gaap_InterestAndFeeIncomeLoansCommercial / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  | 108,015us-gaap_InterestAndFeeIncomeLoansCommercial / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  | 133,410us-gaap_InterestAndFeeIncomeLoansCommercial / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |
Other income |  |  |  |  |  |  |  |  |  |  | 21,217us-gaap_OtherIncome / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  | 4,748us-gaap_OtherIncome / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  | 8,613us-gaap_OtherIncome / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |
Land sales revenue |  |  |  |  |  |  |  |  |  |  | 0us-gaap_LandSales / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  |  |  | 143,921us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  | 112,763us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  | 142,023us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |
Earnings (loss) from equity method investments |  |  |  |  |  |  |  |  |  |  | 0us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  | 0us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  | 0us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |
Income from sales of real estate |  |  |  |  |  |  |  |  |  |  | 0us-gaap_GainLossOnSaleOfProperties / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  | 0us-gaap_GainLossOnSaleOfProperties / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  | 0us-gaap_GainLossOnSaleOfProperties / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |
Income (loss) from discontinued operations |  |  |  |  |  |  |  |  |  |  |  |  | 0star_NetOperatingIncomeFromDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember | [1] | 0star_NetOperatingIncomeFromDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember | [1]
Gain from discontinued operations |  |  |  |  |  |  |  |  |  |  |  |  | 0us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  | 0us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |
Revenue and other earnings |  |  |  |  |  |  |  |  |  |  | 143,921star_RevenueAndOtherEarnings / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  | 112,763star_RevenueAndOtherEarnings / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  | 142,023star_RevenueAndOtherEarnings / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |
Real estate expense |  |  |  |  |  |  |  |  |  |  | 0star_CostOfRealEstateHeldForSaleAndOtherRealEstateOwned / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  | 0star_CostOfRealEstateHeldForSaleAndOtherRealEstateOwned / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  | 0star_CostOfRealEstateHeldForSaleAndOtherRealEstateOwned / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |
Land cost of sales |  |  |  |  |  |  |  |  |  |  | 0star_CostsofLandSales / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  |  |  |  |
Other expense |  |  |  |  |  |  |  |  |  |  | (243)us-gaap_OtherExpenses / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  | (1,625)us-gaap_OtherExpenses / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  | (4,775)us-gaap_OtherExpenses / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |
Allocated interest expense |  |  |  |  |  |  |  |  |  |  | (58,043)star_InterestExpenseIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  | (74,377)star_InterestExpenseIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember | [2] | (111,898)star_InterestExpenseIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember | [2]
Allocated general and administrative |  |  |  |  |  |  |  |  |  |  | (13,314)star_GeneralAndAdministrativeExpenseExcludingStockBasedCompensationExpense / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember | [3] | (13,186)star_GeneralAndAdministrativeExpenseExcludingStockBasedCompensationExpense / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember | [3] | (14,263)star_GeneralAndAdministrativeExpenseExcludingStockBasedCompensationExpense / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember | [3]
Segment profit (loss) |  |  |  |  |  |  |  |  |  |  | 72,321star_SegmentProfitLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember | [4] | 23,575star_SegmentProfitLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember | [4] | 11,087star_SegmentProfitLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember | [4]
Provision for (recovery of) loan losses |  |  |  |  |  |  |  |  |  |  | (1,714)us-gaap_ProvisionForLoanLossesExpensed / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  | 5,489us-gaap_ProvisionForLoanLossesExpensed / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  | 81,740us-gaap_ProvisionForLoanLossesExpensed / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |
Impairment of assets |  |  |  |  |  |  |  |  |  |  | 0star_AssetImpairmentChargesIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  | 0star_AssetImpairmentChargesIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember | [2] | 0star_AssetImpairmentChargesIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember | [2]
Loss on transfer of interest to unconsolidated subsidiary |  |  |  |  |  |  |  |  |  |  |  |  | 0star_GainLossonTransfertoUnconsolidatedSubsidiary / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  | 0star_DepreciationAndAmortizationIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  | 0star_DepreciationAndAmortizationIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember | [2] | 0star_DepreciationAndAmortizationIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember | [2]
Capitalized expenditures |  |  |  |  |  |  |  |  |  |  | 0star_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisition / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  | 0star_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisition / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  | 0star_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisition / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |
Real estate, net | 0star_RealEstateInvestmentPropertyHeldForUseNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  |  |  |  | 0star_RealEstateInvestmentPropertyHeldForUseNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  |  |  |  | 0star_RealEstateInvestmentPropertyHeldForUseNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  | 0star_RealEstateInvestmentPropertyHeldForUseNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  |  |
Real estate available and held for sale | 0star_RealEstateAvailableAndHeldForSale / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  |  |  |  | 0star_RealEstateAvailableAndHeldForSale / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  |  |  |  | 0star_RealEstateAvailableAndHeldForSale / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  | 0star_RealEstateAvailableAndHeldForSale / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  |  |
Total real estate | 0us-gaap_RealEstateInvestmentPropertyNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  |  |  |  | 0us-gaap_RealEstateInvestmentPropertyNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  |  |  |  | 0us-gaap_RealEstateInvestmentPropertyNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  | 0us-gaap_RealEstateInvestmentPropertyNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  |  |
Loans receivable and other lending investments, net | 1,377,843star_LoansAndOtherLendingInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  |  |  |  | 1,370,109star_LoansAndOtherLendingInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  |  |  |  | 1,377,843star_LoansAndOtherLendingInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  | 1,370,109star_LoansAndOtherLendingInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  |  |
Other investments | 0us-gaap_OtherInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  |  |  |  | 0us-gaap_OtherInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  |  |  |  | 0us-gaap_OtherInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  | 0us-gaap_OtherInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  |  |
Total portfolio assets | 1,377,843star_PortfolioAssets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  |  |  |  | 1,370,109star_PortfolioAssets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  |  |  |  | 1,377,843star_PortfolioAssets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  | 1,370,109star_PortfolioAssets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_RealEstateLendingMember |  |  |
Operating Segments | Net Lease |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating lease income |  |  |  |  |  |  |  |  |  |  | 151,934us-gaap_OperatingLeasesIncomeStatementLeaseRevenue / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  | 147,313us-gaap_OperatingLeasesIncomeStatementLeaseRevenue / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  | 149,058us-gaap_OperatingLeasesIncomeStatementLeaseRevenue / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |
Interest income |  |  |  |  |  |  |  |  |  |  | 0us-gaap_InterestAndFeeIncomeLoansCommercial / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  | 0us-gaap_InterestAndFeeIncomeLoansCommercial / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  | 0us-gaap_InterestAndFeeIncomeLoansCommercial / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |
Other income |  |  |  |  |  |  |  |  |  |  | 4,437us-gaap_OtherIncome / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  | 250us-gaap_OtherIncome / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  | 0us-gaap_OtherIncome / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |
Land sales revenue |  |  |  |  |  |  |  |  |  |  | 0us-gaap_LandSales / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  |  |  | 156,371us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  | 147,563us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  | 149,058us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |
Earnings (loss) from equity method investments |  |  |  |  |  |  |  |  |  |  | 3,260us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  | 2,699us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  | 2,632us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |
Income from sales of real estate |  |  |  |  |  |  |  |  |  |  | 6,206us-gaap_GainLossOnSaleOfProperties / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  | 0us-gaap_GainLossOnSaleOfProperties / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  | 0us-gaap_GainLossOnSaleOfProperties / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |
Income (loss) from discontinued operations |  |  |  |  |  |  |  |  |  |  |  |  | 1,484star_NetOperatingIncomeFromDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember | [1] | 7,289star_NetOperatingIncomeFromDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember | [1]
Gain from discontinued operations |  |  |  |  |  |  |  |  |  |  |  |  | 3,395us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  | 27,257us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |
Revenue and other earnings |  |  |  |  |  |  |  |  |  |  | 165,837star_RevenueAndOtherEarnings / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  | 155,141star_RevenueAndOtherEarnings / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  | 186,236star_RevenueAndOtherEarnings / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |
Real estate expense |  |  |  |  |  |  |  |  |  |  | (22,967)star_CostOfRealEstateHeldForSaleAndOtherRealEstateOwned / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  | (22,565)star_CostOfRealEstateHeldForSaleAndOtherRealEstateOwned / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  | (23,886)star_CostOfRealEstateHeldForSaleAndOtherRealEstateOwned / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |
Land cost of sales |  |  |  |  |  |  |  |  |  |  | 0star_CostsofLandSales / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  |  |  |  |
Other expense |  |  |  |  |  |  |  |  |  |  | 0us-gaap_OtherExpenses / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  | 0us-gaap_OtherExpenses / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  | 0us-gaap_OtherExpenses / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |
Allocated interest expense |  |  |  |  |  |  |  |  |  |  | (72,089)star_InterestExpenseIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  | (80,034)star_InterestExpenseIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember | [2] | (92,579)star_InterestExpenseIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember | [2]
Allocated general and administrative |  |  |  |  |  |  |  |  |  |  | (16,736)star_GeneralAndAdministrativeExpenseExcludingStockBasedCompensationExpense / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember | [3] | (14,330)star_GeneralAndAdministrativeExpenseExcludingStockBasedCompensationExpense / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember | [3] | (10,618)star_GeneralAndAdministrativeExpenseExcludingStockBasedCompensationExpense / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember | [3]
Segment profit (loss) |  |  |  |  |  |  |  |  |  |  | 54,045star_SegmentProfitLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember | [4] | 38,212star_SegmentProfitLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember | [4] | 59,153star_SegmentProfitLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember | [4]
Provision for (recovery of) loan losses |  |  |  |  |  |  |  |  |  |  | 0us-gaap_ProvisionForLoanLossesExpensed / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  | 0us-gaap_ProvisionForLoanLossesExpensed / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  | 0us-gaap_ProvisionForLoanLossesExpensed / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |
Impairment of assets |  |  |  |  |  |  |  |  |  |  | 3,689star_AssetImpairmentChargesIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  | 1,176star_AssetImpairmentChargesIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember | [2] | 6,670star_AssetImpairmentChargesIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember | [2]
Loss on transfer of interest to unconsolidated subsidiary |  |  |  |  |  |  |  |  |  |  |  |  | 0star_GainLossonTransfertoUnconsolidatedSubsidiary / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  | 38,841star_DepreciationAndAmortizationIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  | 38,582star_DepreciationAndAmortizationIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember | [2] | 39,250star_DepreciationAndAmortizationIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember | [2]
Capitalized expenditures |  |  |  |  |  |  |  |  |  |  | 3,933star_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisition / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  | 34,076star_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisition / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  | 10,994star_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisition / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |
Real estate, net | 1,188,160star_RealEstateInvestmentPropertyHeldForUseNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  |  |  |  | 1,358,248star_RealEstateInvestmentPropertyHeldForUseNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  |  |  |  | 1,188,160star_RealEstateInvestmentPropertyHeldForUseNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  | 1,358,248star_RealEstateInvestmentPropertyHeldForUseNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  |  |
Real estate available and held for sale | 4,521star_RealEstateAvailableAndHeldForSale / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  |  |  |  | 0star_RealEstateAvailableAndHeldForSale / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  |  |  |  | 4,521star_RealEstateAvailableAndHeldForSale / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  | 0star_RealEstateAvailableAndHeldForSale / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  |  |
Total real estate | 1,192,681us-gaap_RealEstateInvestmentPropertyNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  |  |  |  | 1,358,248us-gaap_RealEstateInvestmentPropertyNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  |  |  |  | 1,192,681us-gaap_RealEstateInvestmentPropertyNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  | 1,358,248us-gaap_RealEstateInvestmentPropertyNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  |  |
Loans receivable and other lending investments, net | 0star_LoansAndOtherLendingInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  |  |  |  | 0star_LoansAndOtherLendingInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  |  |  |  | 0star_LoansAndOtherLendingInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  | 0star_LoansAndOtherLendingInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  |  |
Other investments | 125,360us-gaap_OtherInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  |  |  |  | 16,408us-gaap_OtherInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  |  |  |  | 125,360us-gaap_OtherInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  | 16,408us-gaap_OtherInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  |  |
Total portfolio assets | 1,318,041star_PortfolioAssets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  |  |  |  | 1,374,656star_PortfolioAssets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  |  |  |  | 1,318,041star_PortfolioAssets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  | 1,374,656star_PortfolioAssets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_NetLeasingMember |  |  |
Operating Segments | Operating Properties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating lease income |  |  |  |  |  |  |  |  |  |  | 90,331us-gaap_OperatingLeasesIncomeStatementLeaseRevenue / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  | 86,352us-gaap_OperatingLeasesIncomeStatementLeaseRevenue / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  | 65,706us-gaap_OperatingLeasesIncomeStatementLeaseRevenue / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |
Interest income |  |  |  |  |  |  |  |  |  |  | 0us-gaap_InterestAndFeeIncomeLoansCommercial / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  | 0us-gaap_InterestAndFeeIncomeLoansCommercial / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  | 0us-gaap_InterestAndFeeIncomeLoansCommercial / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |
Other income |  |  |  |  |  |  |  |  |  |  | 42,000us-gaap_OtherIncome / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  | 38,164us-gaap_OtherIncome / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  | 32,615us-gaap_OtherIncome / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |
Land sales revenue |  |  |  |  |  |  |  |  |  |  | 0us-gaap_LandSales / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  |  |  | 132,331us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  | 124,516us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  | 98,321us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |
Earnings (loss) from equity method investments |  |  |  |  |  |  |  |  |  |  | 1,669us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  | 5,546us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  | 25,142us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |
Income from sales of real estate |  |  |  |  |  |  |  |  |  |  | 83,737us-gaap_GainLossOnSaleOfProperties / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  | 82,603us-gaap_GainLossOnSaleOfProperties / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  | 63,472us-gaap_GainLossOnSaleOfProperties / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |
Income (loss) from discontinued operations |  |  |  |  |  |  |  |  |  |  |  |  | 1,251star_NetOperatingIncomeFromDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember | [1] | 886star_NetOperatingIncomeFromDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember | [1]
Gain from discontinued operations |  |  |  |  |  |  |  |  |  |  |  |  | 18,838us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  | 0us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |
Revenue and other earnings |  |  |  |  |  |  |  |  |  |  | 217,737star_RevenueAndOtherEarnings / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  | 232,754star_RevenueAndOtherEarnings / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  | 187,821star_RevenueAndOtherEarnings / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |
Real estate expense |  |  |  |  |  |  |  |  |  |  | (113,504)star_CostOfRealEstateHeldForSaleAndOtherRealEstateOwned / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  | (101,044)star_CostOfRealEstateHeldForSaleAndOtherRealEstateOwned / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  | (100,258)star_CostOfRealEstateHeldForSaleAndOtherRealEstateOwned / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |
Land cost of sales |  |  |  |  |  |  |  |  |  |  | 0star_CostsofLandSales / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  |  |  |  |
Other expense |  |  |  |  |  |  |  |  |  |  | 0us-gaap_OtherExpenses / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  | 0us-gaap_OtherExpenses / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  | 0us-gaap_OtherExpenses / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |
Allocated interest expense |  |  |  |  |  |  |  |  |  |  | (39,535)star_InterestExpenseIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  | (49,114)star_InterestExpenseIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember | [2] | (69,259)star_InterestExpenseIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember | [2]
Allocated general and administrative |  |  |  |  |  |  |  |  |  |  | (9,684)star_GeneralAndAdministrativeExpenseExcludingStockBasedCompensationExpense / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember | [3] | (9,189)star_GeneralAndAdministrativeExpenseExcludingStockBasedCompensationExpense / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember | [3] | (7,572)star_GeneralAndAdministrativeExpenseExcludingStockBasedCompensationExpense / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember | [3]
Segment profit (loss) |  |  |  |  |  |  |  |  |  |  | 55,014star_SegmentProfitLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember | [4] | 73,407star_SegmentProfitLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember | [4] | 10,732star_SegmentProfitLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember | [4]
Provision for (recovery of) loan losses |  |  |  |  |  |  |  |  |  |  | 0us-gaap_ProvisionForLoanLossesExpensed / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  | 0us-gaap_ProvisionForLoanLossesExpensed / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  | 0us-gaap_ProvisionForLoanLossesExpensed / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |
Impairment of assets |  |  |  |  |  |  |  |  |  |  | 8,131star_AssetImpairmentChargesIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  | 12,449star_AssetImpairmentChargesIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember | [2] | 28,501star_AssetImpairmentChargesIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember | [2]
Loss on transfer of interest to unconsolidated subsidiary |  |  |  |  |  |  |  |  |  |  |  |  | 0star_GainLossonTransfertoUnconsolidatedSubsidiary / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  | 32,142star_DepreciationAndAmortizationIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  | 30,599star_DepreciationAndAmortizationIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember | [2] | 28,450star_DepreciationAndAmortizationIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember | [2]
Capitalized expenditures |  |  |  |  |  |  |  |  |  |  | 61,186star_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisition / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  | 41,131star_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisition / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  | 51,579star_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisition / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |
Real estate, net | 628,271star_RealEstateInvestmentPropertyHeldForUseNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  |  |  |  | 638,088star_RealEstateInvestmentPropertyHeldForUseNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  |  |  |  | 628,271star_RealEstateInvestmentPropertyHeldForUseNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  | 638,088star_RealEstateInvestmentPropertyHeldForUseNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  |  |
Real estate available and held for sale | 162,782star_RealEstateAvailableAndHeldForSale / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  |  |  |  | 228,328star_RealEstateAvailableAndHeldForSale / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  |  |  |  | 162,782star_RealEstateAvailableAndHeldForSale / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  | 228,328star_RealEstateAvailableAndHeldForSale / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  |  |
Total real estate | 791,053us-gaap_RealEstateInvestmentPropertyNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  |  |  |  | 866,416us-gaap_RealEstateInvestmentPropertyNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  |  |  |  | 791,053us-gaap_RealEstateInvestmentPropertyNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  | 866,416us-gaap_RealEstateInvestmentPropertyNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  |  |
Loans receivable and other lending investments, net | 0star_LoansAndOtherLendingInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  |  |  |  | 0star_LoansAndOtherLendingInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  |  |  |  | 0star_LoansAndOtherLendingInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  | 0star_LoansAndOtherLendingInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  |  |
Other investments | 13,220us-gaap_OtherInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  |  |  |  | 16,032us-gaap_OtherInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  |  |  |  | 13,220us-gaap_OtherInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  | 16,032us-gaap_OtherInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  |  |
Total portfolio assets | 804,273star_PortfolioAssets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  |  |  |  | 882,448star_PortfolioAssets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  |  |  |  | 804,273star_PortfolioAssets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  | 882,448star_PortfolioAssets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = star_OperatingPropertyMember |  |  |
Operating Segments | Land |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating lease income |  |  |  |  |  |  |  |  |  |  | 835us-gaap_OperatingLeasesIncomeStatementLeaseRevenue / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  | 902us-gaap_OperatingLeasesIncomeStatementLeaseRevenue / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  | 1,527us-gaap_OperatingLeasesIncomeStatementLeaseRevenue / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |
Interest income |  |  |  |  |  |  |  |  |  |  | 0us-gaap_InterestAndFeeIncomeLoansCommercial / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  | 0us-gaap_InterestAndFeeIncomeLoansCommercial / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  | 0us-gaap_InterestAndFeeIncomeLoansCommercial / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |
Other income |  |  |  |  |  |  |  |  |  |  | 3,327us-gaap_OtherIncome / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  | 1,474us-gaap_OtherIncome / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  | 2,635us-gaap_OtherIncome / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |
Land sales revenue |  |  |  |  |  |  |  |  |  |  | 15,191us-gaap_LandSales / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  |  |  | 19,353us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  | 2,376us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  | 4,162us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |
Earnings (loss) from equity method investments |  |  |  |  |  |  |  |  |  |  | 14,966us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  | (5,331)us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  | (6,138)us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |
Income from sales of real estate |  |  |  |  |  |  |  |  |  |  | 0us-gaap_GainLossOnSaleOfProperties / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  | 4,055us-gaap_GainLossOnSaleOfProperties / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  | 0us-gaap_GainLossOnSaleOfProperties / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |
Income (loss) from discontinued operations |  |  |  |  |  |  |  |  |  |  |  |  | 0star_NetOperatingIncomeFromDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember | [1] | 0star_NetOperatingIncomeFromDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember | [1]
Gain from discontinued operations |  |  |  |  |  |  |  |  |  |  |  |  | 0us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  | 0us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |
Revenue and other earnings |  |  |  |  |  |  |  |  |  |  | 34,319star_RevenueAndOtherEarnings / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  | 1,100star_RevenueAndOtherEarnings / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  | (1,976)star_RevenueAndOtherEarnings / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |
Real estate expense |  |  |  |  |  |  |  |  |  |  | (26,918)star_CostOfRealEstateHeldForSaleAndOtherRealEstateOwned / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  | (33,832)star_CostOfRealEstateHeldForSaleAndOtherRealEstateOwned / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  | (27,314)star_CostOfRealEstateHeldForSaleAndOtherRealEstateOwned / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |
Land cost of sales |  |  |  |  |  |  |  |  |  |  | (12,840)star_CostsofLandSales / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  |  |  |  |
Other expense |  |  |  |  |  |  |  |  |  |  | 0us-gaap_OtherExpenses / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  | 0us-gaap_OtherExpenses / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  | 0us-gaap_OtherExpenses / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |
Allocated interest expense |  |  |  |  |  |  |  |  |  |  | (29,432)star_InterestExpenseIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  | (30,368)star_InterestExpenseIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember | [2] | (44,125)star_InterestExpenseIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember | [2]
Allocated general and administrative |  |  |  |  |  |  |  |  |  |  | (13,170)star_GeneralAndAdministrativeExpenseExcludingStockBasedCompensationExpense / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember | [3] | (12,365)star_GeneralAndAdministrativeExpenseExcludingStockBasedCompensationExpense / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember | [3] | (7,405)star_GeneralAndAdministrativeExpenseExcludingStockBasedCompensationExpense / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember | [3]
Segment profit (loss) |  |  |  |  |  |  |  |  |  |  | (48,041)star_SegmentProfitLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember | [4] | (75,465)star_SegmentProfitLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember | [4] | (80,820)star_SegmentProfitLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember | [4]
Provision for (recovery of) loan losses |  |  |  |  |  |  |  |  |  |  | 0us-gaap_ProvisionForLoanLossesExpensed / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  | 0us-gaap_ProvisionForLoanLossesExpensed / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  | 0us-gaap_ProvisionForLoanLossesExpensed / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |
Impairment of assets |  |  |  |  |  |  |  |  |  |  | 22,814star_AssetImpairmentChargesIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  | 728star_AssetImpairmentChargesIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember | [2] | 205star_AssetImpairmentChargesIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember | [2]
Loss on transfer of interest to unconsolidated subsidiary |  |  |  |  |  |  |  |  |  |  |  |  | (7,373)star_GainLossonTransfertoUnconsolidatedSubsidiary / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  | 1,440star_DepreciationAndAmortizationIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  | 1,105star_DepreciationAndAmortizationIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember | [2] | 1,276star_DepreciationAndAmortizationIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember | [2]
Capitalized expenditures |  |  |  |  |  |  |  |  |  |  | 80,119star_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisition / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  | 36,346star_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisition / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  | 20,497star_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisition / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |
Real estate, net | 860,283star_RealEstateInvestmentPropertyHeldForUseNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  |  |  |  | 799,845star_RealEstateInvestmentPropertyHeldForUseNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  |  |  |  | 860,283star_RealEstateInvestmentPropertyHeldForUseNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  | 799,845star_RealEstateInvestmentPropertyHeldForUseNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  |  |
Real estate available and held for sale | 118,679star_RealEstateAvailableAndHeldForSale / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  |  |  |  | 132,189star_RealEstateAvailableAndHeldForSale / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  |  |  |  | 118,679star_RealEstateAvailableAndHeldForSale / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  | 132,189star_RealEstateAvailableAndHeldForSale / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  |  |
Total real estate | 978,962us-gaap_RealEstateInvestmentPropertyNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  |  |  |  | 932,034us-gaap_RealEstateInvestmentPropertyNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  |  |  |  | 978,962us-gaap_RealEstateInvestmentPropertyNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  | 932,034us-gaap_RealEstateInvestmentPropertyNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  |  |
Loans receivable and other lending investments, net | 0star_LoansAndOtherLendingInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  |  |  |  | 0star_LoansAndOtherLendingInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  |  |  |  | 0star_LoansAndOtherLendingInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  | 0star_LoansAndOtherLendingInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  |  |
Other investments | 106,155us-gaap_OtherInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  |  |  |  | 29,765us-gaap_OtherInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  |  |  |  | 106,155us-gaap_OtherInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  | 29,765us-gaap_OtherInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  |  |
Total portfolio assets | 1,085,117star_PortfolioAssets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  |  |  |  | 961,799star_PortfolioAssets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  |  |  |  | 1,085,117star_PortfolioAssets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  | 961,799star_PortfolioAssets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_LandMember |  |  |
Corporate, Non-Segment | Corporate/Other |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating lease income |  |  |  |  |  |  |  |  |  |  | 0us-gaap_OperatingLeasesIncomeStatementLeaseRevenue / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] | 0us-gaap_OperatingLeasesIncomeStatementLeaseRevenue / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] | 0us-gaap_OperatingLeasesIncomeStatementLeaseRevenue / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7]
Interest income |  |  |  |  |  |  |  |  |  |  | 0us-gaap_InterestAndFeeIncomeLoansCommercial / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] | 0us-gaap_InterestAndFeeIncomeLoansCommercial / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] | 0us-gaap_InterestAndFeeIncomeLoansCommercial / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7]
Other income |  |  |  |  |  |  |  |  |  |  | 10,052us-gaap_OtherIncome / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] | 3,572us-gaap_OtherIncome / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] | 3,975us-gaap_OtherIncome / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7]
Land sales revenue |  |  |  |  |  |  |  |  |  |  | 0us-gaap_LandSales / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] |  |  |  |
Total revenues |  |  |  |  |  |  |  |  |  |  | 10,052us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] | 3,572us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] | 3,975us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7]
Earnings (loss) from equity method investments |  |  |  |  |  |  |  |  |  |  | 75,010us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] | 38,606us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] | 81,373us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7]
Income from sales of real estate |  |  |  |  |  |  |  |  |  |  | 0us-gaap_GainLossOnSaleOfProperties / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] | 0us-gaap_GainLossOnSaleOfProperties / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] | 0us-gaap_GainLossOnSaleOfProperties / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7]
Income (loss) from discontinued operations |  |  |  |  |  |  |  |  |  |  |  |  | 0star_NetOperatingIncomeFromDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [1],[7] | 0star_NetOperatingIncomeFromDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [1],[7]
Gain from discontinued operations |  |  |  |  |  |  |  |  |  |  |  |  | 0us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] | 0us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7]
Revenue and other earnings |  |  |  |  |  |  |  |  |  |  | 85,062star_RevenueAndOtherEarnings / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] | 42,178star_RevenueAndOtherEarnings / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] | 85,348star_RevenueAndOtherEarnings / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7]
Real estate expense |  |  |  |  |  |  |  |  |  |  | 0star_CostOfRealEstateHeldForSaleAndOtherRealEstateOwned / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] | 0star_CostOfRealEstateHeldForSaleAndOtherRealEstateOwned / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] | 0star_CostOfRealEstateHeldForSaleAndOtherRealEstateOwned / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7]
Land cost of sales |  |  |  |  |  |  |  |  |  |  | 0star_CostsofLandSales / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] |  |  |  |
Other expense |  |  |  |  |  |  |  |  |  |  | (5,578)us-gaap_OtherExpenses / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] | (6,425)us-gaap_OtherExpenses / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] | (12,491)us-gaap_OtherExpenses / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7]
Allocated interest expense |  |  |  |  |  |  |  |  |  |  | (25,384)star_InterestExpenseIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] | (32,332)star_InterestExpenseIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [2],[7] | (38,300)star_InterestExpenseIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [2],[7]
Allocated general and administrative |  |  |  |  |  |  |  |  |  |  | (22,588)star_GeneralAndAdministrativeExpenseExcludingStockBasedCompensationExpense / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [3],[7] | (23,783)star_GeneralAndAdministrativeExpenseExcludingStockBasedCompensationExpense / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [3],[7] | (25,705)star_GeneralAndAdministrativeExpenseExcludingStockBasedCompensationExpense / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [3],[7]
Segment profit (loss) |  |  |  |  |  |  |  |  |  |  | 31,512star_SegmentProfitLoss / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [4],[7] | (20,362)star_SegmentProfitLoss / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [4],[7] | 8,852star_SegmentProfitLoss / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [4],[7]
Provision for (recovery of) loan losses |  |  |  |  |  |  |  |  |  |  | 0us-gaap_ProvisionForLoanLossesExpensed / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] | 0us-gaap_ProvisionForLoanLossesExpensed / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] | 0us-gaap_ProvisionForLoanLossesExpensed / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7]
Impairment of assets |  |  |  |  |  |  |  |  |  |  | 0star_AssetImpairmentChargesIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] | 0star_AssetImpairmentChargesIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [2],[7] | 978star_AssetImpairmentChargesIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [2],[7]
Loss on transfer of interest to unconsolidated subsidiary |  |  |  |  |  |  |  |  |  |  |  |  | 0star_GainLossonTransfertoUnconsolidatedSubsidiary / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] |  |
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  | 1,148star_DepreciationAndAmortizationIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] | 1,244star_DepreciationAndAmortizationIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [2],[7] | 1,810star_DepreciationAndAmortizationIncludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [2],[7]
Capitalized expenditures |  |  |  |  |  |  |  |  |  |  | 0star_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisition / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] | 0star_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisition / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] | 0star_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisition / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7]
Real estate, net | 0star_RealEstateInvestmentPropertyHeldForUseNet / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] |  |  |  | 0star_RealEstateInvestmentPropertyHeldForUseNet / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] |  |  |  | 0star_RealEstateInvestmentPropertyHeldForUseNet / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] | 0star_RealEstateInvestmentPropertyHeldForUseNet / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] |  |
Real estate available and held for sale | 0star_RealEstateAvailableAndHeldForSale / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] |  |  |  | 0star_RealEstateAvailableAndHeldForSale / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] |  |  |  | 0star_RealEstateAvailableAndHeldForSale / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] | 0star_RealEstateAvailableAndHeldForSale / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] |  |
Total real estate | 0us-gaap_RealEstateInvestmentPropertyNet / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] |  |  |  | 0us-gaap_RealEstateInvestmentPropertyNet / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] |  |  |  | 0us-gaap_RealEstateInvestmentPropertyNet / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] | 0us-gaap_RealEstateInvestmentPropertyNet / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] |  |
Loans receivable and other lending investments, net | 0star_LoansAndOtherLendingInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] |  |  |  | 0star_LoansAndOtherLendingInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] |  |  |  | 0star_LoansAndOtherLendingInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] | 0star_LoansAndOtherLendingInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] |  |
Other investments | 109,384us-gaap_OtherInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] |  |  |  | 145,004us-gaap_OtherInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] |  |  |  | 109,384us-gaap_OtherInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] | 145,004us-gaap_OtherInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] |  |
Total portfolio assets | $ 109,384star_PortfolioAssets / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] |  |  |  | $ 145,004star_PortfolioAssets / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] |  |  |  | $ 109,384star_PortfolioAssets / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] | $ 145,004star_PortfolioAssets / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | [7] |  |
[1] | For the years ended December 31, 2013 and 2012, excludes certain amounts reclassified to discontinued operations on the Company's Consolidated Statements of Operations.
[2] | For the years ended December 31, 2013 and 2012, includes related amounts reclassified to discontinued operations on the Company's Consolidated Statements of Operations.
[3] | General and administrative excludes stock-based compensation expense of $13.3 million, $19.3 million and $15.3 million for the years ended December 31, 2014, 2013 and 2012, respectively.
[4] | The following is a reconciliation of segment profit (loss) to net income (loss) ($ in thousands): For the Years Ended December 31, 2014 2013 2012Segment profit (loss)$164,851 $39,367 $9,004Less: (Provision for) recovery of loan losses1,714 (5,489) (81,740)Less: Impairment of assets(4)(34,634) (14,353) (36,354)Less: Loss on transfer of interest to unconsolidated subsidiary— (7,373) —Less: Stock-based compensation expense(13,314) (19,261) (15,293)Less: Depreciation and amortization(4)(73,571) (71,530) (70,786)Less: Income tax (expense) benefit(4)(3,912) 596 (8,445)Less: Loss on early extinguishment of debt, net(25,369) (33,190) (37,816)Net income (loss)$15,765 $(111,233) $(241,430)
[5] | For the years ended December 31, 2014, 2013 and 2012, the provision for loan losses includes recoveries of previously recorded loan loss reserves of $10.1 million, $63.1 million and $4.6 million, respectively.
[6] | The Company's recorded investment in loans as of December 31, 2014 and 2013 also includes accrued interest of $7.0 million and $6.5 million, respectively, which are included in "Accrued interest and operating lease income receivable, net" on the Company's Consolidated Balance Sheets.
[7] | Corporate/Other represents all corporate level and unallocated items including any intercompany eliminations necessary to reconcile to consolidated Company totals.

X
- Definition The charge against earnings resulting from the aggregate write down of all assets from their carrying value to their fair value including amounts presented in discontinued operations. + References No definition available. + Details
Name: | star_AssetImpairmentChargesIncludingDiscontinuedOperations
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Sum of all assets excluding the Company's Total Portfolio Assets. + References No definition available. + Details
Name: | star_CashAndOtherAssets
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This element represents the aggregate of the holding and operating costs related to real estate held for investment and the net costs related to other real estate owned. + References No definition available. + Details
Name: | star_CostOfRealEstateHeldForSaleAndOtherRealEstateOwned
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Costs of Land Sales + References No definition available. + Details
Name: | star_CostsofLandSales
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production including amounts presented in discontinued operations. + References No definition available. + Details
Name: | star_DepreciationAndAmortizationIncludingDiscontinuedOperations
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Gain (Loss) on Transfer to Unconsolidated Subsidiary + References No definition available. + Details
Name: | star_GainLossonTransfertoUnconsolidatedSubsidiary
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The aggregate total of expenses of managing and administering the affairs of the entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line, excluding stock-based compensation expense. + References No definition available. + Details
Name: | star_GeneralAndAdministrativeExpenseExcludingStockBasedCompensationExpense
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cost of borrowed funds accounted for as interest that was charged against earnings during the period including amounts presented in discontinued operations. + References No definition available. + Details
Name: | star_InterestExpenseIncludingDiscontinuedOperations
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount representing an agreement for an unconditional promise by the maker to pay the Entity (holder) a definite sum of money at a future date, net of any write-downs taken for collection uncertainty on the part of the holder. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among myriad other features and characteristics. In addition, amount also includes total debt and equity financial instruments including: securities held-to-maturity and securities available-for-sale. + References No definition available. + Details
Name: | star_LoansAndOtherLendingInvestments
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This element represents the total revenue and real estate expense from a disposal group or asset held for sale that is reported as a separate component of income, in discontinued operations. + References No definition available. + Details
Name: | star_NetOperatingIncomeFromDiscontinuedOperations
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The aggregate of Total real estate, loans receivable, net and Other investments. + References No definition available. + Details
Name: | star_PortfolioAssets
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Carrying amount as of the balance sheet date of costs that were capitalized after acquisition, including property improvements and carrying costs (for example, real estate taxes and insurance), but excluding the initial purchase price. + References No definition available. + Details
Name: | star_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisition
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Carrying amount as of the balance sheet date of investments in land and buildings held for sale, including real estate considered to be inventory of the entity. + References No definition available. + Details
Name: | star_RealEstateAvailableAndHeldForSale
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Real Estate Investment Property, Held for Use, Net + References No definition available. + Details
Name: | star_RealEstateInvestmentPropertyHeldForUseNet
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The sum of the Company's total revenue and other earnings related to the Company's business segments. + References No definition available. + Details
Name: | star_RevenueAndOtherEarnings
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of profit or loss during the period recognized by the reportable segment. + References No definition available. + Details
Name: | star_SegmentProfitLoss
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
Name: | us-gaap_AllocatedShareBasedCompensationExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.18) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -Article 5 + Details
Name: | us-gaap_Assets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of gain (loss), after tax expense or benefit and not previously recognized, resulting from the sale of a business component. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e957-107759 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760 + Details
Name: | us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
Name: | us-gaap_GainLossOnSaleOfProperties
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 9 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35755396&loc=d3e33749-111570 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.12) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 11 -Article 7 + Details
Name: | us-gaap_IncomeLossFromEquityMethodInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Interest and fee income related to commercial loans including industrial and agricultural, real estate (commercial and residential, construction and development), trade financing, and lease financing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.1) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 1 -Article 9 + Details
Name: | us-gaap_InterestAndFeeIncomeLoansCommercial
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Revenue from the sale of land in the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(e)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
Name: | us-gaap_LandSales
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The total amount of revenue recognized for the period from operating leases, including minimum lease revenue, contingent revenue, percentage revenue and sublease revenue. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7501430&loc=d3e39896-112707 + Details
Name: | us-gaap_OperatingLeasesIncomeStatementLeaseRevenue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition This element represents a sum total of expenses not separately reflected on the income statement for the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 7 -Article 7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.7) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4,6) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
Name: | us-gaap_OtherExpenses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Reflects the sum of all other revenue and income recognized by the entity in the period not otherwise specified in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.4) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 4 -Article 7 + Details
Name: | us-gaap_OtherIncome
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Other investments not otherwise specified in the taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 12 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Subparagraph g -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(f,g)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
Name: | us-gaap_OtherInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of expense related to loss from loan transactions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 11 -Article 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.11) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
Name: | us-gaap_ProvisionForLoanLossesExpensed
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(d)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
Name: | us-gaap_RealEstateInvestmentPropertyNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
Name: | us-gaap_Revenues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ConsolidationItemsAxis=us-gaap_CorporateNonSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |