XML 125 R112.htm IDEA: XBRL DOCUMENT
v3.20.4

Regulatory Capital (Details) | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Capital Conservation Buffer Required for Capital Adequacy | 2.50% |
Savings Bank [Member] |  |
Capital Conservation Buffer | 4.30% | 5.43%
Holding Company |  |
Capital Conservation Buffer | 4.54% | 5.62%

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: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The minimum capital conservation buffer, above the regulatory minimum capital ratios, required for capital adequacy. + References No definition available. + Details
Name: | ffic_CapitalConservationBufferRequiredForCapitalAdequacy
Namespace Prefix: | ffic_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- 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: |