v3.25.4
Basis Of Presentation (Details)
Dec. 31, 2025
Third Federal Savings, MHC | Common Stock
Mutual Holding Company, Percentage Of Ownership In Registrant
80.90%
X
- Definition
Mutual Holding Companies Percentage Of ownership In Registrant
+ References
No definition available.
+ Details
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tfsl_MutualHoldingCompaniesPercentageOfOwnershipInRegistrant
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tfsl_
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dtr-types:percentItemType
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na
Period Type:
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X
- Details
Name:
dei_LegalEntityAxis=tfsl_ThirdFederalSavingsMHCMember
Namespace Prefix:
Data Type:
na
Balance Type:
Period Type:
X
- Details
Name:
us-gaap_StatementClassOfStockAxis=us-gaap_CommonStockMember
Namespace Prefix:
Data Type:
na
Balance Type:
Period Type: