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v3.25.2

Regulatory Capital (Details) | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Savings bank |  |
Capital Conservation Buffer | 5.74% | 5.11%
Holding company |  |
Capital Conservation Buffer | 5.10% | 4.82%

X
- Definition Represents the capital conservation buffer, above the regulatory minimum capital ratios. + References No definition available. + Details
Name: | ffic_CapitalConservationBuffer
Namespace Prefix: | ffic_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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- Details
Name: | dei_LegalEntityAxis=ffic_SavingsBankMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=ffic_HoldingCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |