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Loans - Age Analysis of Recorded Investment in Loans (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | $ 6,668,912 | $ 6,747,873
Financial Asset, 30 to 59 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 10,575 | 19,523
Financial Asset, 60 to 89 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 1,821 | 12,793
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 44,984 | 33,975
Financial Asset, Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 57,380 | 66,291
Financial Asset, Not Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 6,611,532 | 6,681,582
Multi-family residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 2,448,186 | 2,531,613
Multi-family residential | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 4,505 | 12,596
Multi-family residential | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 0 | 9,255
Multi-family residential | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 14,531 | 11,707
Multi-family residential | Financial Asset, Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 19,036 | 33,558
Multi-family residential | Financial Asset, Not Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 2,429,150 | 2,498,055
Commercial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 1,961,833 | 1,974,622
Commercial | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 1,479 | 4,846
Commercial | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 0 | 0
Commercial | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 22,011 | 6,376
Commercial | Financial Asset, Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 23,490 | 11,222
Commercial | Financial Asset, Not Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 1,938,343 | 1,963,400
One-to-four family - mixed- use property |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 485,366 | 513,938
One-to-four family - mixed- use property | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 948 | 870
One-to-four family - mixed- use property | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 0 | 1,234
One-to-four family - mixed- use property | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 0 | 117
One-to-four family - mixed- use property | Financial Asset, Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 948 | 2,221
One-to-four family - mixed- use property | Financial Asset, Not Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 484,418 | 511,717
One-to-four family - residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 336,505 | 244,593
One-to-four family - residential | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 1,339 | 802
One-to-four family - residential | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 113 | 65
One-to-four family - residential | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 750 | 812
One-to-four family - residential | Financial Asset, Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 2,202 | 1,679
One-to-four family - residential | Financial Asset, Not Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 334,303 | 242,914
Construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 51,527 | 60,114
Construction | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 0 | 0
Construction | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 0 | 0
Construction | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 0 | 0
Construction | Financial Asset, Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 0 | 0
Construction | Financial Asset, Not Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 51,527 | 60,114
Small Business Administration |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 11,556 | 20,195
Small Business Administration | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 172 | 0
Small Business Administration | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 0 | 0
Small Business Administration | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 558 | 2,531
Small Business Administration | Financial Asset, Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 730 | 2,531
Small Business Administration | Financial Asset, Not Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 10,826 | 17,664
Commercial business and other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 1,373,939 | 1,402,798
Commercial business and other | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 2,132 | 409
Commercial business and other | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 1,708 | 2,239
Commercial business and other | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 7,134 | 12,432
Commercial business and other | Financial Asset, Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 10,974 | 15,080
Commercial business and other | Financial Asset, Not Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | $ 1,362,965 | $ 1,387,718

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