XML 58 R48.htm IDEA: XBRL DOCUMENT
v3.23.3

Loans - Troubled Debt Restructurings That Are Not Performing (Details) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2022 contract | Sep. 30, 2022 contract | Dec. 31, 2022 USD ($) contract item
Number of contracts | contract | 1 | 6 |
Nonperforming Financial Instruments [Member] |  |  |
Number of contracts | contract |  |  | 2
Amortized Cost | $ |  |  | $ 3,263
Commercial Business and Other Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] |  |  |
Number of contracts | item |  |  | 2
Amortized Cost | $ |  |  | $ 3,263

X
- Definition The amount of amortized cost of financing receivables modified as troubled debt restructuring. + References No definition available. + Details
Name: | ffic_FinancingReceivableTroubledDebtRestructuringAmortizedCost
Namespace Prefix: | ffic_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 33 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-33 + Details
Name: | us-gaap_FinancingReceivableModificationsNumberOfContracts2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FinancialInstrumentPerformanceStatusAxis=us-gaap_NonperformingFinancingReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=ffic_CommercialBusinessAndOtherPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |