XML 51 R40.htm IDEA: XBRL DOCUMENT
v3.25.3

Securities (Details) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2025 USD ($) | Sep. 30, 2025 USD ($) security | Dec. 31, 2024 USD ($) security | Jun. 30, 2025 USD ($) | Sep. 30, 2024 USD ($)
Securities |  |  |  |  |
Total Securities available for sale, Fair Value | $ 1,541,423 | $ 1,541,423 | $ 1,497,905 |  |
Allowance for credit loss | 2,921 | 2,921 | 2,627 | $ 3,066 | $ 0
Accrued interest receivable on available-for-sale debt securities | 8,400 | 8,400 | $ 8,800 |  |
Carrying value of securities at the time of sale | $ 80,700 | $ 80,700 |  |  |
Percentage of average yield of securities sold | 5.29% | 5.29% |  |  |
Municipals |  |  |  |  |
Securities |  |  |  |  |
Number of securities indicated that a credit loss | security |  | 1 | 1 |  |
Non-accrual with amortized cost | $ 20,600 | $ 20,600 | $ 20,600 |  |
Amount of allowance for credit loss on investment in debt | 2,900 | 2,900 | 2,600 |  |
Amount of investment in debt security measured at fair value | 17,300 | 17,300 | 18,000 |  |
Total Securities available for sale, Fair Value | 17,278 | 17,278 | 18,000 |  |
Allowance for credit loss | 2,921 | 2,921 | 2,627 |  |
Corporate |  |  |  |  |
Securities |  |  |  |  |
Total Securities available for sale, Fair Value | 200,130 | 200,130 | 125,249 |  |
Corporate | New York based bank holding company |  |  |  |  |
Securities |  |  |  |  |
Total Securities available for sale, Fair Value | 10,000 | 10,000 | 10,000 |  |
Held-to-maturity Securities |  |  |  |  |
Securities |  |  |  |  |
Specific reserve for outstanding balance of financing receivable in active forbearance | 400 | 400 | 400 |  |
Accrued interest receivable on held-to-maturity securities | $ 100 | $ 100 | $ 100 |  |

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 Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) with non-accrual status. + References No definition available. + Details
Name: | ffic_DebtSecuritiesAvailableForSaleExcludingAccruedInterestNonAccrual
Namespace Prefix: | ffic_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) with non-accrual status. + References No definition available. + Details
Name: | ffic_DebtSecuritiesAvailableForSaleExcludingAccruedInterestNonAccrualAllowanceForCreditLoss
Namespace Prefix: | ffic_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) with non-accrual status. + References No definition available. + Details
Name: | ffic_DebtSecuritiesAvailableForSaleExcludingAccruedInterestNonAccrualAmortizedCost
Namespace Prefix: | ffic_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Number of investments in non-accrual status and existence of credit loss for available for sale debt securities where present value of cash flows expected to be collected is less than the amortized costs basis. + References No definition available. + Details
Name: | ffic_DebtSecuritiesAvailableForSaleExcludingAccruedInterestNonAccrualNumberOfSecurity
Namespace Prefix: | ffic_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of decrease in the available for sale securities from the sale of such securities by the entity during the reporting period. + References No definition available. + Details
Name: | ffic_DebtSecuritiesAvailableForSaleSaleValue
Namespace Prefix: | ffic_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The average yield of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) that was sold by the entity during the reporting period. + References No definition available. + Details
Name: | ffic_DebtSecuritiesAvailableForSaleSoldAverageYield
Namespace Prefix: | ffic_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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 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 Amount excluding accrued interest, of allowance for credit loss on 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://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479130/326-30-45-1 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount excluding accrued interest, 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://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479130/326-30-45-1 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6B + Details
Name: | us-gaap_ScheduleOfTradingSecuritiesAndOtherTradingAssetsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

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

X
- Details
Name: | srt_CounterpartyNameAxis=ffic_NewYorkBasedBankHoldingCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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