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Loans Receivable and Allowance for Credit Losses (Delinquency Status of Total Loans) (Details) - USD ($) | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | $ 3,322,139,000 | $ 3,082,418,000
Loans Receivable >90 Days and Accruing | 0 | 0
Total Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 34,441,000 | 9,428,000
30 To 59 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 14,773,000 | 3,305,000
60 To 90 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 12,539,000 | 1,857,000
Greater Than 90 Days [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 7,129,000 | 4,266,000
Current [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 3,287,698,000 | 3,072,990,000
Residential [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 251,845,000 | 250,123,000
Commercial & Multi-family [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 2,444,887,000 | 2,345,229,000
Construction [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 185,202,000 | 144,931,000
Commercial Business [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 370,512,000 | 282,007,000
Home Equity [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 66,046,000 | 56,888,000
Consumer [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 3,647,000 | 3,240,000
Originated loans [Member] | Residential [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 251,845,000 | 250,123,000
Loans Receivable >90 Days and Accruing |  |
Originated loans [Member] | Residential [Member] | Total Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 1,084,000 | 567,000
Originated loans [Member] | Residential [Member] | 30 To 59 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 50,000 | 253,000
Originated loans [Member] | Residential [Member] | 60 To 90 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 856,000 | 314,000
Originated loans [Member] | Residential [Member] | Greater Than 90 Days [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 178,000 |
Originated loans [Member] | Residential [Member] | Current [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 250,761,000 | 249,556,000
Originated loans [Member] | Commercial & Multi-family [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 2,444,887,000 | 2,345,229,000
Loans Receivable >90 Days and Accruing |  |
Originated loans [Member] | Commercial & Multi-family [Member] | Total Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 21,840,000 | 2,591,000
Originated loans [Member] | Commercial & Multi-family [Member] | 30 To 59 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 12,195,000 | 2,163,000
Originated loans [Member] | Commercial & Multi-family [Member] | 60 To 90 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 6,378,000 | 428,000
Originated loans [Member] | Commercial & Multi-family [Member] | Greater Than 90 Days [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 3,267,000 |
Originated loans [Member] | Commercial & Multi-family [Member] | Current [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 2,423,047,000 | 2,342,638,000
Originated loans [Member] | Construction [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 185,202,000 | 144,931,000
Loans Receivable >90 Days and Accruing |  |
Originated loans [Member] | Construction [Member] | Total Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 4,931,000 | 3,180,000
Originated loans [Member] | Construction [Member] | 30 To 59 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans |  |
Originated loans [Member] | Construction [Member] | 60 To 90 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 2,045,000 |
Originated loans [Member] | Construction [Member] | Greater Than 90 Days [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 2,886,000 | 3,180,000
Originated loans [Member] | Construction [Member] | Current [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 180,271,000 | 141,751,000
Originated loans [Member] | Commercial Business [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 370,512,000 | 282,007,000
Loans Receivable >90 Days and Accruing |  |
Originated loans [Member] | Commercial Business [Member] | Total Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 5,949,000 | 2,391,000
Originated loans [Member] | Commercial Business [Member] | 30 To 59 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 2,056,000 | 190,000
Originated loans [Member] | Commercial Business [Member] | 60 To 90 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 3,095,000 | 1,115,000
Originated loans [Member] | Commercial Business [Member] | Greater Than 90 Days [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 798,000 | 1,086,000
Originated loans [Member] | Commercial Business [Member] | Current [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 364,563,000 | 279,616,000
Originated loans [Member] | Home Equity [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 66,046,000 | 56,888,000
Loans Receivable >90 Days and Accruing |  |
Originated loans [Member] | Home Equity [Member] | Total Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 636,000 | 699,000
Originated loans [Member] | Home Equity [Member] | 30 To 59 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 472,000 | 699,000
Originated loans [Member] | Home Equity [Member] | 60 To 90 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 164,000 |
Originated loans [Member] | Home Equity [Member] | Greater Than 90 Days [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans |  |
Originated loans [Member] | Home Equity [Member] | Current [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 65,410,000 | 56,189,000
Originated loans [Member] | Consumer [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 3,647,000 | 3,240,000
Loans Receivable >90 Days and Accruing |  |
Originated loans [Member] | Consumer [Member] | Total Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 1,000 |
Originated loans [Member] | Consumer [Member] | 30 To 59 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans |  |
Originated loans [Member] | Consumer [Member] | 60 To 90 Days Past Due [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | 1,000 |
Originated loans [Member] | Consumer [Member] | Greater Than 90 Days [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans |  |
Originated loans [Member] | Consumer [Member] | Current [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans | $ 3,646,000 | $ 3,240,000

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