XML 92 R79.htm IDEA: XBRL DOCUMENT
v3.20.4

Securities (Details) |  | 12 Months Ended
--- | --- | ---
Jan. 01, 2020 USD ($) | Dec. 31, 2020 USD ($) security | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Debt Securities, Trading, and Equity Securities, FV-NI, Total |  | $ 0 | $ 0 |
Number of securities in portfolio | security |  | 3 |  |
Specific reserve for outstanding balance of financing receivable in active forbearance |  | $ 600,000 |  |
Accrued interest receivable on held-to-maturity securities |  | 100,000 |  |
Accrued interest receivable on available-for-sale debt securities |  | 1,300,000 |  |
Mortgage Backed Securities Available for Sale Amortized Cost |  | 308,100,000 | 128,000,000.0 | $ 196,400,000
Proceeds from Sale of Debt Securities, Available-for-sale |  | 221,000,000.0 | 26,400,000 | $ 67,000,000.0
Held-to-maturity Securities [Member] |  |  |  |
Outstanding balance in active forbearance |  | 21,000,000.0 |  |
Non-qualified Deferred Compensation Plan [Member] | Other Assets [Member] |  |  |  |
Deferred Compensation Plan, Amounts Held in Rabbi Trust |  | $ 22,600,000 | $ 20,000,000.0 |
Collateralized Mortgage Obligations by Commercial Real Estate [Member] |  |  |  |
Private Issue Collateralized Mortgage Obligations, Number |  | 0 | 0 |
Accounting Standards Update 2016-13 [Member] |  |  |  |
Increase in allowance for held-to-maturity debt securities | $ 300,000 |  |  |

X
- Definition Interest earned but not yet received by the entity on its debt securities available for sale. + References No definition available. + Details
Name: | ffic_DebtSecuritiesAvailableForSaleAccruedInterestIncomeReceivable
Namespace Prefix: | ffic_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Interest earned but not yet received by the entity on its debt securities held-to-maturity. + References No definition available. + Details
Name: | ffic_DebtSecuritiesHeldToMaturityAccruedInterestIncomeReceivable
Namespace Prefix: | ffic_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount held in a rabbi trust for certain non-qualified deferred compensation plans. + References No definition available. + Details
Name: | ffic_DeferredCompensationPlanAmountsHeldInRabbiTrust
Namespace Prefix: | ffic_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The outstanding balance of financing receivable that are in active forbearance. + References No definition available. + Details
Name: | ffic_FinancingReceivableActiveForbearance
Namespace Prefix: | ffic_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Specific reserve for outstanding balance of financing receivable in active forbearance. + References No definition available. + Details
Name: | ffic_FinancingReceivableActiveForbearanceSpecificReserve
Namespace Prefix: | ffic_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of amortized cost on available for sale mortgage backed securities. + References No definition available. + Details
Name: | ffic_MortgageBackedSecuritiesAvailableForSaleAmortizedCost
Namespace Prefix: | ffic_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Number of securities in portfolio. + References No definition available. + Details
Name: | ffic_NumberOfSecuritiesInPortfolio
Namespace Prefix: | ffic_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of privately issued collateralized mortgage obligations. + References No definition available. + Details
Name: | ffic_PrivateIssueCollateralizedMortgageObligationsNumber
Namespace Prefix: | ffic_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of increase (decrease) in allowance for credit loss on investment in debt security measured at amortized cost (held-to-maturity). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447 + Details
Name: | us-gaap_DebtSecuritiesHeldToMaturityAllowanceForCreditLossPeriodIncreaseDecrease
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of cash inflow from sale of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=118954083&loc=d3e26853-111562 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3151-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3179-108585 + Details
Name: | us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.4) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
Name: | us-gaap_TradingSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=us-gaap_HeldtomaturitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DeferredCompensationArrangementWithIndividualPostretirementBenefitsByTypeOfDeferredCompensationAxis=ffic_NonQualifiedDeferredCompensationPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=ffic_CollateralizedMortgageObligationsByCommercialRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=us-gaap_AccountingStandardsUpdate201613Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |