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Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 USD ($)
Statement of Comprehensive Income |
Other income recognized due to hedge forecasted for permanent debt that did not occur | $ 15,191

X
- Definition The amount of other income recognized due to a hedge forecasted for permanent debt that did not occur. + References No definition available. + Details
Name: | safe_OtherIncomeRecognizedDueToHedgeForecastedForPermanentDebtThatDidNotOccur
Namespace Prefix: | safe_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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