Loans Receivable and Allowance for Loan Losses (Delinquency Status of Total Loans) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	$ 3,082,418	$ 2,343,937
Loans Receivable >90 Days and Accruing	0	3,124
Total Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	9,428	20,806
30 To 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	3,305	5,738
60 To 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	1,857	166
Greater Than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	4,266	14,902
Current [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	3,072,990	2,323,131
Originated Loans [Member] \| Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	250,123	224,534
Originated Loans [Member] \| Residential [Member] \| Total Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	567	1,149
Originated Loans [Member] \| Residential [Member] \| 30 To 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	253	1,063
Originated Loans [Member] \| Residential [Member] \| 60 To 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	314
Originated Loans [Member] \| Residential [Member] \| Greater Than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable		86
Originated Loans [Member] \| Residential [Member] \| Current [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	249,556	223,385
Originated Loans [Member] \| Commercial And Multi-Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	2,345,229	1,720,174
Originated Loans [Member] \| Commercial And Multi-Family [Member] \| Total Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	2,591	6,348
Originated Loans [Member] \| Commercial And Multi-Family [Member] \| 30 To 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	2,163	1,181
Originated Loans [Member] \| Commercial And Multi-Family [Member] \| 60 To 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	428
Originated Loans [Member] \| Commercial And Multi-Family [Member] \| Greater Than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable		5,167
Originated Loans [Member] \| Commercial And Multi-Family [Member] \| Current [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	2,342,638	1,713,826
Originated Loans [Member] \| Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	144,931	153,904
Originated Loans [Member] \| Construction [Member] \| Total Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	3,180	5,746
Originated Loans [Member] \| Construction [Member] \| 30 To 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable		2,899
Originated Loans [Member] \| Construction [Member] \| Greater Than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	3,180	2,847
Originated Loans [Member] \| Construction [Member] \| Current [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	141,751	148,158
Originated Loans [Member] \| Commercial Business [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	282,007	191,139
Loans Receivable >90 Days and Accruing		3,124
Originated Loans [Member] \| Commercial Business [Member] \| Total Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	2,391	7,346
Originated Loans [Member] \| Commercial Business [Member] \| 30 To 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	190	405
Originated Loans [Member] \| Commercial Business [Member] \| 60 To 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	1,115	166
Originated Loans [Member] \| Commercial Business [Member] \| Greater Than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	1,086	6,775
Originated Loans [Member] \| Commercial Business [Member] \| Current [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	279,616	183,793
Originated Loans [Member] \| Home Equity [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	56,888	50,469
Originated Loans [Member] \| Home Equity [Member] \| Total Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	699	217
Originated Loans [Member] \| Home Equity [Member] \| 30 To 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	699	190
Originated Loans [Member] \| Home Equity [Member] \| Greater Than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable		27
Originated Loans [Member] \| Home Equity [Member] \| Current [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	56,189	50,252
Originated Loans [Member] \| Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	3,240	3,717
Originated Loans [Member] \| Consumer [Member] \| Current [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Receivable	$ 3,240	$ 3,717