XML 134 R124.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Schedule IV - Mortgage Loans on Real Estate - Reconciliation of Mortgage Loans on Real Estate (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
SEC Schedule, 12-29, Real Estate Companies, Investment in Movement in Mortgage Loans on Real Estate [Roll Forward] |  |  |
Balance at January 1 | $ 496,553 | $ 561,761 | $ 730,515
Additions: |  |  |
New mortgage loans | 32,942 | 19,975 | 11,667
Additions under existing mortgage loans | 20,958 | 72,574 | 164,120
Other | 7,455 | 25,867 | 25,740
Deductions: |  |  |
Collections of principal | (304,053) | (178,662) | (355,769)
Provision for loan losses | 166 | (4,930) | (493)
Transfers to real estate and equity investments | (42,501) | 0 | (13,987)
Amortization of premium | (32) | (32) | (32)
Balance at December 31 | $ 211,488 | 496,553 | $ 561,761
Charge offs |  | $ 25,900 |

X
- Definition Amount of decrease in investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate, from collection of principal. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Footnote 6 -Subsection 29 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29(Footnote 6)) -URI http://asc.fasb.org/extlink&oid=120402547&loc=d3e617274-123014 + Details
Name: | srt_MortgageLoansOnRealEstateCollectionsOfPrincipal
Namespace Prefix: | srt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Additions [Abstract] + References No definition available. + Details
Name: | star_AdditionsAbstract
Namespace Prefix: | star_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Deductions [Abstract] + References No definition available. + Details
Name: | star_DeductionsAbstract
Namespace Prefix: | star_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Mortgage Loan on Real Estate, Transfers From Real Estate and Equity Investments + References No definition available. + Details
Name: | star_MortgageLoanonRealEstateTransfersFromRealEstateandEquityInvestments
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Total amount of additions under existing mortgage loans on real estate during the reporting period. + References No definition available. + Details
Name: | star_MortgageLoansOnRealEstateAdditionsUnderExistingMortgageLoans
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The charge-offs on mortgage loans on real estate recognized during the reporting period. + References No definition available. + Details
Name: | star_MortgageLoansOnRealEstateChargeOffs
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Mortgage Loans On Real Estate, Provision For Recovery Of Loan Losses + References No definition available. + Details
Name: | star_MortgageLoansOnRealEstateProvisionForRecoveryOfLoanLosses
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29(Column G)) -URI http://asc.fasb.org/extlink&oid=120402547&loc=d3e617274-123014 + Details
Name: | us-gaap_MortgageLoansOnRealEstate
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of decrease in investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate, from amortization of premium. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29(Footnote 6)) -URI http://asc.fasb.org/extlink&oid=120402547&loc=d3e617274-123014 + Details
Name: | us-gaap_MortgageLoansOnRealEstateAmortizationOfPremium
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of increase in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate, from new investment. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29(Footnote 6)) -URI http://asc.fasb.org/extlink&oid=120402547&loc=d3e617274-123014 + Details
Name: | us-gaap_MortgageLoansOnRealEstateNewMortgageLoans
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of addition to investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate, classified as other. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29(Footnote 6)) -URI http://asc.fasb.org/extlink&oid=120402547&loc=d3e617274-123014 + Details
Name: | us-gaap_MortgageLoansOnRealEstateOtherAdditions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_MovementInMortgageLoansOnRealEstateRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration