XML 75 R65.htm IDEA: XBRL DOCUMENT
v3.19.1

Other Investments - Safehold Inc. (Details) |  | 1 Months Ended | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jan. 02, 2019 USD ($) $ / shares shares | May 31, 2018 USD ($) office_building | Oct. 31, 2017 USD ($) unit | Mar. 31, 2019 USD ($) multiple | Mar. 31, 2018 USD ($) | Jun. 30, 2018 USD ($) | Jan. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Aug. 31, 2017 USD ($)
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Additional cash investment in equity method investment |  |  |  | $ 260,297,000 | $ 43,391,000 |  |  |  |
Management agreement, termination fee as multiple of prior year management fee | multiple |  |  |  | 3 |  |  |  |  |
Management agreement, equity raised since inception metric related to renewal and termination |  |  |  | $ 820,000,000 |  |  |  |  |
Carrying value of loans |  |  |  | $ 844,624,000 |  |  |  | $ 919,493,000 |
Fee percent of SAFE Equity up to $1.5 billion |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Management fee as percent of equity |  |  |  | 1.00% |  |  |  |  |
Fee percent of SAFE Equity up to $1.5 billion | Maximum |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Management fee equity threshold amount |  |  |  | $ 1,500,000,000.0 |  |  |  |  |
Fee percent of SAFE Equity between $1.5 billion and $3.0 billion |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Management fee as percent of equity |  |  |  | 1.25% |  |  |  |  |
Fee percent of SAFE Equity between $1.5 billion and $3.0 billion | Minimum |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Management fee equity threshold amount |  |  |  | $ 1,500,000,000.0 |  |  |  |  |
Fee percent of SAFE Equity between $1.5 billion and $3.0 billion | Maximum |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Management fee equity threshold amount |  |  |  | $ 3,000,000,000.0 |  |  |  |  |
Fee percent of SAFE Equity between $3.0 billion and $5.0 billion |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Management fee as percent of equity |  |  |  | 1.375% |  |  |  |  |
Fee percent of SAFE Equity between $3.0 billion and $5.0 billion | Minimum |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Management fee equity threshold amount |  |  |  | $ 3,000,000,000.0 |  |  |  |  |
Fee percent of SAFE Equity between $3.0 billion and $5.0 billion | Maximum |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Management fee equity threshold amount |  |  |  | $ 5,000,000,000.0 |  |  |  |  |
Fee percent of SAFE Equity over $5.0 billion |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Management fee as percent of equity |  |  |  | 1.50% |  |  |  |  |
Fee percent of SAFE Equity over $5.0 billion | Minimum |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Management fee equity threshold amount |  |  |  | $ 5,000,000,000.0 |  |  |  |  |
SAFE | Real estate equity investments |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Equity interest (percent) |  |  |  | 42.40% |  |  |  |  |
Number of Investor Units purchased (in shares) | shares | 12,500,000 |  |  |  |  |  |  |  |
Investor Units, purchase price per unit (in dollars per share) | $ / shares | $ 20.00 |  |  |  |  |  |  |  |
Additional cash investment in equity method investment | $ 250,000,000 |  |  |  |  |  |  |  |
Investor Units as percent of fully diluted economic interest (percent) |  |  |  | 40.60% |  |  |  |  |
Equity interest including both common stock and Investor Units (percent) |  |  |  | 65.80% |  |  |  |  |
Voting power cap threshold (percent) | 41.90% |  |  | 41.90% |  |  |  |  |
Stock transfer limitation maximum per agreement, other than widely distributed public offering (percent) | 20.00% |  |  |  |  |  |  |  |
Ground Lease, Atlanta medical office |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Commitment to provide loan to lessee |  |  |  |  |  |  |  |  | $ 24,000,000
Amount of loan funded |  |  |  | $ 18,000,000 |  |  |  |  |
Interest income |  |  |  | 500,000 | $ 200,000 |  |  |  |
Great Oaks |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Lessor, operating lease, term of contract |  |  | 99 years |  |  |  |  |  |
Number of units in real estate property to be built | unit |  |  | 301 |  |  |  |  |  |
Real estate, leasehold improvement allowance |  |  | $ 7,200,000 |  |  |  |  |  |
Forward purchase contract, purchase agreement, amount |  |  | 34,000,000 |  |  |  |  |  |
Ground Lease, 100 and 200 Glenridge Point |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Commitment to provide loan to lessee |  | $ 19,900,000 |  |  |  |  |  |  |
Number of office buildings | office_building |  | 2 |  |  |  |  |  |  |
Interest income |  |  |  | 600,000 |  |  |  |  |
Ground Lease, Washington DC building conversion |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Commitment to provide loan to lessee |  |  |  |  |  |  | $ 13,300,000 |  |
Amount of loan funded |  |  |  | 11,900,000 |  |  |  |  |
Interest income |  |  |  | 200,000 |  |  |  |  |
SAFE |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Management fees waived |  |  |  | 900,000 |  |  |  |  |
Expense reimbursements from related party |  |  |  |  |  | $ 500,000 |  |  |
Expense reimbursement waived |  |  |  | 400,000 |  |  |  |  |
Management Fees | SAFE |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Management fee revenue from related party |  |  |  | $ 1,500,000 |  |  |  |  |
Leasehold First Mortgage | Great Oaks |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Commitment to provide loan to lessee |  |  | 80,500,000 |  |  |  |  |  |
Carrying value of loans |  |  | $ 80,500,000 |  |  |  |  |  |
SAFE |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Ground lease term (in years) |  |  |  | 98 years |  |  |  |  |

X
- Definition Common Stock, Voting Rights, Investor Units Voting Power Threshold + References No definition available. + Details
Name: | star_CommonStockVotingRightsInvestorUnitsVotingPowerThreshold
Namespace Prefix: | star_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Equity Method Investment, Ownership Percentage Including Common Stock And Investor Units + References No definition available. + Details
Name: | star_EquityMethodInvestmentOwnershipPercentageIncludingCommonStockAndInvestorUnits
Namespace Prefix: | star_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Forward Purchase Contract, Purchase Agreement, Amount + References No definition available. + Details
Name: | star_ForwardPurchaseContractPurchaseAgreementAmount
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Ground Leases, Term + References No definition available. + Details
Name: | star_GroundLeasesTerm
Namespace Prefix: | star_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Investor Units, Fully Diluted Economic Interest, Percentage + References No definition available. + Details
Name: | star_InvestorUnitsFullyDilutedEconomicInterestPercentage
Namespace Prefix: | star_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Investor Units, Purchase Price Per Unit + References No definition available. + Details
Name: | star_InvestorUnitsPurchasePricePerUnit
Namespace Prefix: | star_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Lessor, Operating Lease, Term of Contract1 + References No definition available. + Details
Name: | star_LessorOperatingLeaseTermofContract1
Namespace Prefix: | star_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Reflects the aggregate gross carrying amount of all categories of loans held in portfolio, after deducting deferred income, but before deducting the allowance for losses on loans. + References No definition available. + Details
Name: | star_LoansReceivableNetOfDeferredIncome
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Management Fees Waived + References No definition available. + Details
Name: | star_ManagementFeesWaived
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Number Of Investor Units Purchased + References No definition available. + Details
Name: | star_NumberOfInvestorUnitsPurchased
Namespace Prefix: | star_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number Of Office Buildings + References No definition available. + Details
Name: | star_NumberOfOfficeBuildings
Namespace Prefix: | star_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of Units in Real Estate Property to be Built + References No definition available. + Details
Name: | star_NumberofUnitsinRealEstatePropertytobeBuilt
Namespace Prefix: | star_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Real Estate, Leasehold Improvement Allowance + References No definition available. + Details
Name: | star_RealEstateLeaseholdImprovementAllowance
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Reimbursement Revenue Waived + References No definition available. + Details
Name: | star_ReimbursementRevenueWaived
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Related Party Transaction, Commitment to Extend Credit, Amount Funded + References No definition available. + Details
Name: | star_RelatedPartyTransactionCommitmenttoExtendCreditAmountFunded
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Related Party Transaction, Commitment to Extend Credit to Customer + References No definition available. + Details
Name: | star_RelatedPartyTransactionCommitmenttoExtendCredittoCustomer
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Related Party Transaction, Management Agreement, Renewal Clause, Equity Raised Since Inception + References No definition available. + Details
Name: | star_RelatedPartyTransactionManagementAgreementRenewalClauseEquityRaisedSinceInception
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Related Party Transaction, Management Agreement, Renewal Clause, Termination Fee As Multiple Of Prior Year Management Fee + References No definition available. + Details
Name: | star_RelatedPartyTransactionManagementAgreementRenewalClauseTerminationFeeAsMultipleOfPriorYearManagementFee
Namespace Prefix: | star_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Related Party Transaction, Management Fee, Percent of Equity + References No definition available. + Details
Name: | star_RelatedPartyTransactionManagementFeePercentofEquity
Namespace Prefix: | star_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Related Party Transaction, Management Fee, Shareholders' Equity Threshold Amount + References No definition available. + Details
Name: | star_RelatedPartyTransactionManagementFeeShareholdersEquityThresholdAmount
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Stock Transfer Limitation Per Agreement, Other Than Widely Distributed Public Offering, Maximum Percentage + References No definition available. + Details
Name: | star_StockTransferLimitationPerAgreementOtherThanWidelyDistributedPublicOfferingMaximumPercentage
Namespace Prefix: | star_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
Name: | us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of interest income earned from interest-bearing assets owed to the entity by related party. + References No definition available. + Details
Name: | us-gaap_InterestIncomeRelatedParty
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireEquityMethodInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Reflects the sum of all other revenue and income realized from sales and other transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party during the period. + References No definition available. + Details
Name: | us-gaap_RelatedPartyTransactionOtherRevenuesFromTransactionsWithRelatedParty
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07.1(c)) -URI http://asc.fasb.org/extlink&oid=114873854&loc=SL114874292-224272 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(e)) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 + Details
Name: | us-gaap_RevenueFromRelatedParties
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | star_ManagementAgreementFeeStructureAxis=star_ManagementFeeTrancheOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | star_ManagementAgreementFeeStructureAxis=star_ManagementFeeTrancheTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | star_ManagementAgreementFeeStructureAxis=star_ManagementFeeTrancheThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | star_ManagementAgreementFeeStructureAxis=star_ManagementFeeTrancheFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=star_SafeholdInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_RealEstateInvestmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=star_GroundLeaseAtlantaMedicalCenterMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=star_GreatOaksMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=star_GroundLease100200GlenridgePointAtlantaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=star_GroundLeaseConversionWashingtonDCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=srt_AffiliatedEntityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_ManagementServiceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=star_LeaseholdFirstMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=star_SafeholdInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |