XML 51 R42.htm IDEA: XBRL DOCUMENT
v3.23.2

Summary of Significant Accounting Policies - Merger Pro Forma (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Pro forma information |  |  |  |
Pro forma extinguishment of debt |  | $ 116,600 |  |
iStar Merger |  |  |  |
Pro forma information |  |  |  |
Pro forma revenues | $ 85,661 | 75,627 | $ 182,917 | $ 145,220
Pro forma net income (loss) | 22,111 | $ (89,865) | $ 56,434 | (163,478)
Pro forma merger expenses |  |  |  | 47,700
Pro forma extinguishment of debt |  |  |  | 158,700
iStar Merger | iStar Inc. |  |  |  |
Pro forma information |  |  |  |
Pro forma revenues | 100 |  |  |
Pro forma net income (loss) | $ 4,600 |  |  |
Pro forma merger expenses |  |  |  | $ 20,300

X
- Definition The pro forma acquisition related costs for the period as if the business combination or combinations had been completed at the beginning of a period. + References No definition available. + Details
Name: | safe_BusinessAcquisitionsProFormaAcquisitionRelatedCosts
Namespace Prefix: | safe_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The pro forma acquisition extinguishment of debt costs for the period as if the business combination or combinations had been completed at the beginning of a period. + References No definition available. + Details
Name: | safe_BusinessAcquisitionsProFormaExtinguishmentOfDebt
Namespace Prefix: | safe_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_BusinessAcquisitionProFormaInformationAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479328/805-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479328/805-10-50-2 + Details
Name: | us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479328/805-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479328/805-10-50-2 + Details
Name: | us-gaap_BusinessAcquisitionsProFormaRevenue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=safe_IstarMergerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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