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Loans (Narrative) (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2013 item | Dec. 31, 2012 item | Dec. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of loans held for sale | $ 471,000 | $ 5,400,000 |
Amount of loans held for sale, non-accrual | 471,000 | 5,400,000 |
Purchased credit-impaired (PCI) loans held-for-investment, Federal Deposit Insurance Corporation assisted transaction | 59,500,000 | 71,500,000 |
Purchased credit-impaired (PCI) loans held-for-investment | 59,468,000 | 75,349,000 |
Investment in non accrual loans | 17,700,000 | 34,900,000 |
Principal balance of loans on non accrual status | 3,800,000 | 3,500,000 |
Impairment of loans | 13,500,000 | 26,000,000 |
Loans past 90 days and still accruing | 32,000 | 621,000 |
Loans with carrying balances not written down | 21,800,000 | 24,900,000 |
Average original impaired loans | 43,900,000 | 54,300,000 | 58,700,000
Interest income on impaired loans | 2,000,000 | 2,800,000 | 2,800,000
Number of Relationships | 4 | 5 |
Troubled debt restructurings | 1,000,000 | 45,000,000 |
Commercial Real Estate [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Percentage of Purchase Credit Impaired Loans | 37.00% |  |
Commercial and Industrial Loans [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Percentage of Purchase Credit Impaired Loans | 47.00% |  |
Non-Accruing Loans [Member] | Purchased Credit Impaired [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Purchased credit-impaired (PCI) loans held-for-investment | 3,600,000 | 3,100,000 |
Flatbush Federal |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of loans held for sale, non-accrual |  | 3,800,000 |
Loans Defaulted Under Restructured Terms [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Number of Relationships | 4 | 1 |
Number of borrowers that subsequently defaulted | 1 |  |
Loans Defaulted Under Restructured Terms [Member] | Commercial Real Estate [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Number of Relationships | 3 |  |
Loans Defaulted Under Restructured Terms [Member] | Commercial and Industrial Loans [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Number of Relationships | 1 |  |
Minimum [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Principal balance of loans on non accrual status | $ 500,000 |  |
Maximum [Member] | Multi Family [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loan to value ratio | 35.00% |  |
Maximum [Member] | One-to-Four Family Residential Mortgage [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loan to value ratio | 60.00% |  |

X
- Definition Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default. + References No definition available. + Details
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- Definition Loans deemed to be impaired non accrual amount. + References No definition available. + Details
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- Definition Loans with carrying balances not written down. + References No definition available. + Details
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- Definition This item represents the aggregate fair value of loans held as assets that are in nonaccrual status for which the fair value option has been elected, if the entity's policy is to recognize interest income separately from other changes in fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 28 -Subparagraph (e)(2) -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14064-108612 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 159 -Paragraph 18 -Subparagraph e(2) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953676-111524 + Details
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- Definition Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5258-111524 + Details
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- Definition Amount of interest income recognized on a cash-basis method of accounting that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524 + Details
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- Definition The face amount of loans that will be sold to other entities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6375948&loc=d3e4428-111522 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 01-6 -Paragraph 13 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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