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Loans and Allowance for Loan Losses - Age Analysis of Recorded Investment in Loans (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Loans, past due | $ 28,602 | $ 28,928
Loans, current | 5,903,486 | 5,728,007
Loans | 5,932,088 | 5,756,935
Financing Receivables, 30 to 59 Days Past Due [Member] |  |
Loans, past due | 12,375 | 8,219
Financing Receivables, 60 to 89 Days Past Due [Member] |  |
Loans, past due | 534 | 8,027
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Loans, past due | 15,693 | 12,682
Multi-family Residential Portfolio Segment [Member] |  |
Loans, past due | 4,682 | 8,346
Loans, current | 2,274,090 | 2,230,245
Loans | 2,278,772 | 2,238,591
Multi-family Residential Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] |  |
Loans, past due | 1,919 | 4,042
Multi-family Residential Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] |  |
Loans, past due | 0 | 1,563
Multi-family Residential Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Loans, past due | 2,763 | 2,741
Commercial Real Estate Portfolio Segment [Member] |  |
Loans, past due | 5,214 | 5,308
Loans, current | 1,661,599 | 1,576,700
Loans | 1,666,813 | 1,582,008
Commercial Real Estate Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] |  |
Loans, past due | 5,206 | 0
Commercial Real Estate Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] |  |
Loans, past due | 0 | 4,941
Commercial Real Estate Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Loans, past due | 8 | 367
One-To-Four Family - Mixed-Use Property Portfolio Segment [Member] |  |
Loans, past due | 3,910 | 1,887
Loans, current | 592,435 | 590,584
Loans | 596,345 | 592,471
One-To-Four Family - Mixed-Use Property Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] |  |
Loans, past due | 3,283 | 1,117
One-To-Four Family - Mixed-Use Property Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] |  |
Loans, past due | 0 | 496
One-To-Four Family - Mixed-Use Property Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Loans, past due | 627 | 274
One-To-Four Family - Residential Portfolio Segment [Member] |  |
Loans, past due | 6,291 | 6,881
Loans, current | 193,593 | 181,335
Loans | 199,884 | 188,216
One-To-Four Family - Residential Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] |  |
Loans, past due | 1,322 | 720
One-To-Four Family - Residential Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] |  |
Loans, past due | 381 | 1,022
One-To-Four Family - Residential Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Loans, past due | 4,588 | 5,139
Co-Operative Apartments Portfolio Segment [Member] |  |
Loans, past due |  | 0
Loans, current |  | 8,663
Loans |  | 8,663
Co-Operative Apartments Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] |  |
Loans, past due |  | 0
Co-Operative Apartments Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] |  |
Loans, past due |  | 0
Co-Operative Apartments Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Loans, past due |  | 0
Construction Portfolio Segment [Member] |  |
Loans, past due | 0 | 0
Loans, current | 66,524 | 67,754
Loans | 66,524 | 67,754
Construction Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] |  |
Loans, past due | 0 | 0
Construction Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] |  |
Loans, past due | 0 | 0
Construction Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Loans, past due | 0 | 0
Small Business Administration Portfolio Segment [Member] |  |
Loans, past due | 1,544 | 1,151
Loans, current | 12,961 | 13,294
Loans | 14,505 | 14,445
Small Business Administration Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] |  |
Loans, past due | 0 | 0
Small Business Administration Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] |  |
Loans, past due | 0 | 0
Small Business Administration Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Loans, past due | 1,544 | 1,151
Taxi Medallion Portfolio Segment [Member] |  |
Loans, past due | 1,195 | 1,065
Loans, current | 2,087 | 2,244
Loans | 3,282 | 3,309
Taxi Medallion Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] |  |
Loans, past due | 0 | 0
Taxi Medallion Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] |  |
Loans, past due | 0 | 0
Taxi Medallion Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Loans, past due | 1,195 | 1,065
Commercial Business and Other Portfolio Segment [Member] |  |
Loans, past due | 5,766 | 4,290
Loans, current | 1,100,197 | 1,057,188
Loans | 1,105,963 | 1,061,478
Commercial Business and Other Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] |  |
Loans, past due | 645 | 2,340
Commercial Business and Other Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] |  |
Loans, past due | 153 | 5
Commercial Business and Other Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Loans, past due | $ 4,968 | $ 1,945

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