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Note 7 - Other Real Estate Owned (Tables) | 3 Months Ended
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Mar. 31, 2018
Notes Tables |
Other Real Estate, Roll Forward [Table Text Block] |
|  | For the three months ended
|  | March 31,
|  | 2018 |  | 2017
|  | (In thousands)
Balance at beginning of period |  | $ | - |  |  | $ | 533 |
Acquisitions |  |  | 638 |  |  |  | - |
Sales |  |  | - |  |  |  | (533 | )
Balance at end of period |  | $ | 638 |  |  | $ | - |
Gross Gains, Gross (Losses) and Write-downs of OREO [Table Text Block] |
|  | For the three months ended
|  | March 31,
|  | 2018 |  | 2017
|  | (In thousands)
Gross gains |  | $ | - |  |  | $ | 50 |

X
- Definition Represents gross gain, gross losses and write downs of OREO. + References No definition available. + Details
Name: | ffic_GrossGainsGrossLossesAndWriteDownsOfOREOTableTextBlock
Namespace Prefix: | ffic_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the change in other real estate on properties owned. Excludes real estate assets taken in settlement of troubled loans through surrender or foreclosure by banks. + References No definition available. + Details
Name: | us-gaap_OtherRealEstateRollForwardTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_TableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration