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Schedule IV - Mortgage Loans on Real Estate (Details) (USD $) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Mortgage Loans on Real Estate [Line Items] |  |  |  |
Mortgage Loans on Real Estate, Charge Offs | $ 239,600,000star_MortgageLoansOnRealEstateChargeOffs | $ 152,800,000star_MortgageLoansOnRealEstateChargeOffs | $ 106,900,000star_MortgageLoansOnRealEstateChargeOffs |
Mortgage Loans on Real Estate, Write-down or Reserve, Amount | 64,400,000us-gaap_MortgageLoansOnRealEstateWritedownOrReserveAmount1 |  |  |
Mortgage Loans on Real Estate, Carrying Amount of Mortgages | 726,426,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages | 827,796,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages | 1,421,654,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages | 2,449,554,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages
Mortgage Loans on Real Estate, Face Amount of Mortgages | 794,803,000us-gaap_MortgageLoansOnRealEstateFaceAmountOfMortgages |  |  |
New mortgage loans | 476,332,000us-gaap_MortgageLoansOnRealEstateNewMortgageLoans | 19,249,000us-gaap_MortgageLoansOnRealEstateNewMortgageLoans | 2,205,000us-gaap_MortgageLoansOnRealEstateNewMortgageLoans |
Additions under existing mortgage loans | 13,108,000star_MortgageLoansOnRealEstateAdditionsUnderExistingMortgageLoans | 31,589,000star_MortgageLoansOnRealEstateAdditionsUnderExistingMortgageLoans | 29,887,000star_MortgageLoansOnRealEstateAdditionsUnderExistingMortgageLoans |
Other | 26,156,000us-gaap_MortgageLoansOnRealEstateOtherAdditions | 16,385,000us-gaap_MortgageLoansOnRealEstateOtherAdditions | 33,324,000us-gaap_MortgageLoansOnRealEstateOtherAdditions |
Collections of principal | (532,465,000)us-gaap_MortgageLoansOnRealEstateCollectionsOfPrincipal | (636,883,000)us-gaap_MortgageLoansOnRealEstateCollectionsOfPrincipal | (700,943,000)us-gaap_MortgageLoansOnRealEstateCollectionsOfPrincipal |
Recovery of (provision for) loan losses | 483,000star_MortgageLoansOnRealEstateProvisionForLoanLosses | 25,011,000star_MortgageLoansOnRealEstateProvisionForLoanLosses | (121,869,000)star_MortgageLoansOnRealEstateProvisionForLoanLosses |
Transfers to real estate and equity investments | (84,912,000)us-gaap_MortgageLoansOnRealEstateForeclosures | (49,100,000)us-gaap_MortgageLoansOnRealEstateForeclosures | (270,359,000)us-gaap_MortgageLoansOnRealEstateForeclosures |
Amortization of premium | (72,000)us-gaap_MortgageLoansOnRealEstateAmortizationOfPremium | (109,000)us-gaap_MortgageLoansOnRealEstateAmortizationOfPremium | (145,000)us-gaap_MortgageLoansOnRealEstateAmortizationOfPremium |
Subordinate Mortgages |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |
Mortgage Loans on Real Estate, Carrying Amount of Mortgages | 53,331,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = star_SubordinateMortgagesMember |  |  |
Mortgage Loans on Real Estate, Face Amount of Mortgages | 53,274,000us-gaap_MortgageLoansOnRealEstateFaceAmountOfMortgages / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = star_SubordinateMortgagesMember |  |  |
Subordinate Mortgages Individually Less than 3 Percent |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |
Mortgage Loans on Real Estate, Carrying Amount of Mortgages | 28,339,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = star_SubordinateMortgagesIndividuallyLessThan3PercentMember |  |  |
Mortgage Loans on Real Estate, Face Amount of Mortgages | 28,274,000us-gaap_MortgageLoansOnRealEstateFaceAmountOfMortgages / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = star_SubordinateMortgagesIndividuallyLessThan3PercentMember |  |  |
Senior Mortgages |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |
Mortgage Loans on Real Estate, Carrying Amount of Mortgages | 673,095,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = star_SeniorMortgagesMember |  |  |
Mortgage Loans on Real Estate, Face Amount of Mortgages | 741,529,000us-gaap_MortgageLoansOnRealEstateFaceAmountOfMortgages / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = star_SeniorMortgagesMember |  |  |
Senior Mortgages Individually Less than 3 Percent |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |
Mortgage Loans on Real Estate, Carrying Amount of Mortgages | 233,355,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = star_SeniorMortgagesIndividuallyLessThan3PercentMember |  |  |
Mortgage Loans on Real Estate, Face Amount of Mortgages | 276,626,000us-gaap_MortgageLoansOnRealEstateFaceAmountOfMortgages / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = star_SeniorMortgagesIndividuallyLessThan3PercentMember |  |  |
Borrower A |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |
Mortgage Loans on Real Estate, Carrying Amount of Mortgages | 140,553,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = star_BorrowerMember |  |  |
Mortgage Loans on Real Estate, Prior Liens | 0us-gaap_MortgageLoansOnRealEstatePriorLiens1 / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = star_BorrowerMember |  |  |
Mortgage Loans on Real Estate, Face Amount of Mortgages | 142,736,000us-gaap_MortgageLoansOnRealEstateFaceAmountOfMortgages / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = star_BorrowerMember |  |  |
Borrower B |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |
Mortgage Loans on Real Estate, Carrying Amount of Mortgages | 117,818,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = star_BorrowerBMember |  |  |
Mortgage Loans on Real Estate, Prior Liens | 0us-gaap_MortgageLoansOnRealEstatePriorLiens1 / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = star_BorrowerBMember |  |  |
Mortgage Loans on Real Estate, Face Amount of Mortgages | 118,750,000us-gaap_MortgageLoansOnRealEstateFaceAmountOfMortgages / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = star_BorrowerBMember |  |  |
Borrower C |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |
Mortgage Loans on Real Estate, Carrying Amount of Mortgages | 92,525,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = star_BorrowerCMember |  |  |
Mortgage Loans on Real Estate, Prior Liens | 0us-gaap_MortgageLoansOnRealEstatePriorLiens1 / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = star_BorrowerCMember |  |  |
Mortgage Loans on Real Estate, Face Amount of Mortgages | 93,500,000us-gaap_MortgageLoansOnRealEstateFaceAmountOfMortgages / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = star_BorrowerCMember |  |  |
Borrower D |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |
Mortgage Loans on Real Estate, Carrying Amount of Mortgages | 64,574,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = star_BorrowerDMember |  |  |
Mortgage Loans on Real Estate, Prior Liens | 0us-gaap_MortgageLoansOnRealEstatePriorLiens1 / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = star_BorrowerDMember |  |  |
Mortgage Loans on Real Estate, Face Amount of Mortgages | 63,842,000us-gaap_MortgageLoansOnRealEstateFaceAmountOfMortgages / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = star_BorrowerDMember |  |  |
Borrower E |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |
Mortgage Loans on Real Estate Principal Delinquent more than 90 Days | 46,100,000star_MortgageLoansOnRealEstatePrincipalDelinquentMoreThan90Days / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = star_BorrowerEMember |  |  |
Loan Non Performing And Non Accrual Status Delinquency Period | 90 days |  |  |
Mortgage Loans on Real Estate, Carrying Amount of Mortgages | 24,270,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = star_BorrowerEMember |  |  |
Mortgage Loans on Real Estate, Prior Liens | 0us-gaap_MortgageLoansOnRealEstatePriorLiens1 / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = star_BorrowerEMember |  |  |
Mortgage Loans on Real Estate, Face Amount of Mortgages | 46,075,000us-gaap_MortgageLoansOnRealEstateFaceAmountOfMortgages / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = star_BorrowerEMember |  |  |
Borrower F |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |
Mortgage Loans on Real Estate, Carrying Amount of Mortgages | 24,992,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = star_BorrowerFMember |  |  |
Mortgage Loans on Real Estate, Prior Liens | 100,000,000us-gaap_MortgageLoansOnRealEstatePriorLiens1 / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = star_BorrowerFMember |  |  |
Mortgage Loans on Real Estate, Face Amount of Mortgages | $ 25,000,000us-gaap_MortgageLoansOnRealEstateFaceAmountOfMortgages / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = star_BorrowerFMember |  |  |
Minimum [Member] | Borrower B |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |
Loans Receivable, Basis Spread on Variable Rate | 0.25%us-gaap_LoansReceivableBasisSpreadOnVariableRate / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = star_BorrowerBMember / us-gaap_RangeAxis = us-gaap_MinimumMember |  |  |
Minimum [Member] | Borrower E |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |
Loans Receivable, Basis Spread on Variable Rate | 4.00%us-gaap_LoansReceivableBasisSpreadOnVariableRate / us-gaap_MortgageLoansOnRealEstateLoanTypeAxis = star_BorrowerEMember / us-gaap_RangeAxis = us-gaap_MinimumMember |  |  |

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- Definition Loan Non Performing And Non Accrual Status Delinquency Period + References No definition available. + Details
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- Definition Total amount of additions under existing mortgage loans on real estate during the reporting period. + References No definition available. + Details
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- Definition The charge-offs on mortgage loans on real estate recognized during the reporting period. + References No definition available. + Details
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- Definition Amount of principal due on loans that have been delinquent more than 90 days. + References No definition available. + Details
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- Definition The provision for loan losses on mortgage loans on real estate amortized during the reporting period. + References No definition available. + Details
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- Definition The percentage points (also referred to as 'margin') added to the reference rate as stated in the loan agreement and used to compute the variable rate on the loans receivable. For instance, the loan agreement might state that the interest rate the borrower is obligated to pay is the London Interbank Offered Rate (LIBOR) plus three quarters (3/4) of a percentage point adjusted quarterly (each three months). LIBOR in this example is the index or reference rate, 3/4 percentage point is the margin, the reference rate plus the margin is the fully indexed rate. This element would be used to report separately the margin. + References No definition available. + Details
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- Definition The amount of premium on mortgage loans on real estate amortized during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule IV) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 29 -Article 12 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph c -Subparagraph Schedule IV -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29.6) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 + Details
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- Definition The carrying amount of the outstanding balance due under the mortgage loan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule IV) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 29 -Article 12 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph c -Subparagraph Schedule IV -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 + Details
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- Definition The amount of principal collected on mortgage loans on real estate during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule IV) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 29 -Article 12 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph c -Subparagraph Schedule IV -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29.6) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 + Details
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- Definition Amount of the contractual principal due at the origination of the mortgage loan (face amount). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule IV) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 29 -Article 12 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph c -Subparagraph Schedule IV -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 + Details
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- Definition The amount of mortgage loans on real estate which were foreclosed on during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule IV) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 29 -Article 12 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph c -Subparagraph Schedule IV -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29.6) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 + Details
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- Definition Total amount of new mortgage loans on real estate during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule IV) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 29 -Article 12 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph c -Subparagraph Schedule IV -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29.6) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 + Details
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- Definition Total amount of additions to mortgage loans other than new loans during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule IV) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 29 -Article 12 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph c -Subparagraph Schedule IV -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29.6) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 + Details
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- Definition Amount of prior lien on the real estate that secures the mortgage loan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule IV) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 29 -Article 12 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph c -Subparagraph Schedule IV -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 + Details
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- Definition Amount of reserve for write-down of a mortgage loan on real estate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule IV) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 29 -Article 12 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph c -Subparagraph Schedule IV -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29.7) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 + Details
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