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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	ffic_InterestBearingDepositsAbstract
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Period Type:	duration

Weighted average interest rate for certificates of deposit liabilities.

No definition available.

Name:	ffic_WeightedAverageRateDepositCertificatesOfDeposit
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

The weighted average interest rate for money market demand account deposit liabilities.

No definition available.

Name:	ffic_WeightedAverageRateDepositMoneyMarket
Namespace Prefix:	ffic_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Weighted average interest rate for mortgagors' escrow deposits.

No definition available.

Name:	ffic_WeightedAverageRateDepositMortgagorsEscrow
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

The weighted average interest rate for NOW demand deposit liabilities.

No definition available.

Name:	ffic_WeightedAverageRateDepositNOWAccounts
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Data Type:	num:percentItemType
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Period Type:	instant

Weighted average interest rate for savings deposit liabilities.

No definition available.

Name:	ffic_WeightedAverageRateDepositSavings
Namespace Prefix:	ffic_
Data Type:	num:percentItemType
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Period Type:	instant

Carrying amount of accumulated prepayments received by financial institutions from borrowers for taxes (for example, property taxes) and insurance (for example, property and catastrophe) which will periodically be remitted to the appropriate governmental agency or vendor on behalf of the borrower.

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.12)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 12

-Article 9

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Amount of deposits in accounts that offer many of the same services as checking accounts although transactions may be somewhat more limited, share some of the characteristics of a money market fund and are insured by the Federal government, also known as money market accounts.

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Amount of deposits in interest-bearing transaction accounts at banks or savings and loans, that are restricted in regard to ownership and can usually only be held by individuals, nonprofit entities and governments. Negotiable order of withdrawal accounts differ from money market demand accounts as they typically have higher reserve requirements and no limit on the number of checks that can be written.

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Amount of interest bearing deposits with no stated maturity, which may include passbook and statement savings accounts and money-market deposit accounts (MMDAs).

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The aggregate of all domestic and foreign interest-bearing deposit liabilities.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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The aggregate amount of all domestic and foreign noninterest-bearing deposits liabilities held by the entity.

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Amount of deposits that cannot be withdrawn before a set date without penalty or for which notice of withdrawal is required. Time deposits include, but are not limited to, certificates of deposits, individual retirement accounts and open accounts.