XML 123 R110.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Note 12 - Pension and Other Postretirement Benefit Plans - Employee Benefit Trust (EBT) Shares (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Shares owned by Employee Benefit Trust, beginning balance (in shares) | 551,762 | 675,436
Shares purchased (in shares) | 11,631 | 18,391
Shares released and allocated (in shares) | (118,371) | (142,065)
Shares owned by Employee Benefit Trust, ending balance (in shares) | 445,022 | 551,762
Market value of unallocated shares | $ 12,238,105 | $ 16,216,285

X
- Definition Number of shares purchased during the period by the Employee Trust. + References No definition available. + Details
Name: | ffic_CommonStockSharesPurchasedByEmployeeTrust
Namespace Prefix: | ffic_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Common stock released and allocated by the Employee Trust. + References No definition available. + Details
Name: | ffic_CommonStockSharesReleasedAndAllocatedByTheEmployeeTrust
Namespace Prefix: | ffic_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate value of common stock held in a trust that has been set up specifically to accumulate stock for the sole purpose of distribution to participating employees but not yet earned. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 25 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=75028277&loc=d3e19850-108362 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 25 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=75028277&loc=d3e19833-108362 + Details
Name: | us-gaap_CommonStockIssuedEmployeeTrustDeferred
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Number of common stock held in a trust that has been set up specifically to accumulate stock for the sole purpose of distribution to participating employees but not yet earned. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 25 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=65888597&loc=d3e16701-113920 + Details
Name: | us-gaap_CommonStockSharesHeldInEmployeeTrustShares
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant