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Loans - Composition of Loans (Details) - USD ($) $ in Thousands | Jun. 30, 2023 | Dec. 31, 2022
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Loans: |  |
Net unamortized premiums and unearned loan fees | $ 8,836 | $ 9,011
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 6,839,050 | 6,934,769
Unallocated portfolio layer basis adjustments | (6,625) |
Total loans, net of fees and costs | 6,832,425 | 6,934,769
Multi-Family Residential |  |
Loans: |  |
Loans before allowance for credit losses, fee and costs | 2,593,955 | 2,601,384
Commercial Real Estate |  |
Loans: |  |
Loans before allowance for credit losses, fee and costs | 1,917,749 | 1,913,040
One-To-Four Family - Mixed Used Property |  |
Loans: |  |
Loans before allowance for credit losses, fee and costs | 542,368 | 554,314
One-To-Four Family - Residential |  |
Loans: |  |
Loans before allowance for credit losses, fee and costs | 230,055 | 241,246
Construction Portfolio Segment |  |
Loans: |  |
Loans before allowance for credit losses, fee and costs | 57,325 | 70,951
Total loans, net of fees and costs excluding portfolio layer basis adjustments | 57,205 | 70,824
Small Business Administration |  |
Loans: |  |
Loans before allowance for credit losses, fee and costs | 22,404 | 23,275
Commercial Business and Other |  |
Loans: |  |
Loans before allowance for credit losses, fee and costs | $ 1,466,358 | $ 1,521,548

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