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Loans Receivable and Allowance for Credit Losses (Allowance for Credit Losses) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for credit losses: Beginning Balance | $ 33,608 | $ 32,373 | $ 37,119
Allowance for credit losses: Charge-offs | (10,835) | (805) | (2,095)
Allowance for credit losses: Recoveries | 446 | 101 | 424
Allowance for credit losses: Provision Credit (benefit) | 11,570 | 6,104 | (3,075)
Allowance for credit losses: Ending balance: individually evaluated | 11,817 | 4,229 | 2,784
Allowance for credit losses: Ending balance: collectively evaluated | 22,972 | 29,379 | 29,589
Allowance for credit losses: Ending Balance | 34,789 | 33,608 | 32,373
Loans receivables: Ending balance: individually evaluated | 83,399 | 54,019 | 28,272
Loans receivables: Ending balance: collectively evaluated | 2,950,385 | 3,263,383 | 3,054,146
Total Gross Loans | 3,033,784 | 3,317,402 | 3,082,418
Residential [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for credit losses: Beginning Balance | 2,344 | 2,474 | 4,094
Allowance for credit losses: Recoveries | 48 | 45 | 23
Allowance for credit losses: Provision Credit (benefit) | (445) | (319) | (1,643)
Allowance for credit losses: Ending balance: individually evaluated |  |  | 196
Allowance for credit losses: Ending balance: collectively evaluated | 1,947 | 2,344 | 2,278
Allowance for credit losses: Ending Balance | 1,947 | 2,344 | 2,474
Loans receivables: Ending balance: individually evaluated | 853 | 444 | 5,147
Loans receivables: Ending balance: collectively evaluated | 239,017 | 247,851 | 244,976
Total Gross Loans | 239,870 | 248,295 | 250,123
Commercial & Multi-family [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for credit losses: Beginning Balance | 16,301 | 21,749 | 22,065
Allowance for credit losses: Charge-offs | (531) |  |
Allowance for credit losses: Provision Credit (benefit) | (4,064) | 1,675 | (316)
Allowance for credit losses: Ending balance: individually evaluated | 1,473 | 990 |
Allowance for credit losses: Ending balance: collectively evaluated | 10,233 | 15,311 | 21,749
Allowance for credit losses: Ending Balance | 11,706 | 16,301 | 21,749
Loans receivables: Ending balance: individually evaluated | 64,735 | 42,259 | 15,397
Loans receivables: Ending balance: collectively evaluated | 2,181,942 | 2,391,856 | 2,329,832
Total Gross Loans | 2,246,677 | 2,434,115 | 2,345,229
Construction [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for credit losses: Beginning Balance | 3,841 | 2,094 | 2,231
Allowance for credit losses: Provision Credit (benefit) | (1,821) | 360 | (137)
Allowance for credit losses: Ending balance: individually evaluated |  | 310 | 518
Allowance for credit losses: Ending balance: collectively evaluated | 2,020 | 3,531 | 1,576
Allowance for credit losses: Ending Balance | 2,020 | 3,841 | 2,094
Loans receivables: Ending balance: individually evaluated | 586 | 4,292 | 3,180
Loans receivables: Ending balance: collectively evaluated | 134,848 | 188,524 | 141,751
Total Gross Loans | 135,434 | 192,816 | 144,931
Commercial Business [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for credit losses: Beginning Balance | 5,811 | 4,495 | 8,000
Allowance for credit losses: Charge-offs | (1,799) |  | (2,095)
Allowance for credit losses: Recoveries | 371 | 29 | 191
Allowance for credit losses: Provision Credit (benefit) | 6,354 | (447) | (1,601)
Allowance for credit losses: Ending balance: individually evaluated | 4,725 | 2,132 | 2,066
Allowance for credit losses: Ending balance: collectively evaluated | 6,012 | 3,679 | 2,429
Allowance for credit losses: Ending Balance | 10,737 | 5,811 | 4,495
Loans receivables: Ending balance: individually evaluated | 11,163 | 6,015 | 3,821
Loans receivables: Ending balance: collectively evaluated | 238,689 | 263,259 | 211,619
Total Gross Loans | 249,852 | 269,274 | 215,440
Business Express [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for credit losses: Beginning Balance | 4,542 | 872 |
Allowance for credit losses: Charge-offs | (8,038) | (805) |
Allowance for credit losses: Recoveries | 27 | 11 |
Allowance for credit losses: Provision Credit (benefit) | 11,238 | 4,780 | 872
Allowance for credit losses: Ending balance: individually evaluated | 5,619 | 797 |
Allowance for credit losses: Ending balance: collectively evaluated | 2,150 | 3,745 | 872
Allowance for credit losses: Ending Balance | 7,769 | 4,542 | 872
Loans receivables: Ending balance: individually evaluated | 5,619 | 797 |
Loans receivables: Ending balance: collectively evaluated | 87,328 | 102,131 | 66,567
Total Gross Loans | 92,947 | 102,928 | 66,567
Home Equity [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for credit losses: Beginning Balance | 691 | 485 | 533
Allowance for credit losses: Recoveries |  | 16 | 12
Allowance for credit losses: Provision Credit (benefit) | (97) | 8 | (60)
Allowance for credit losses: Ending balance: individually evaluated |  |  | 4
Allowance for credit losses: Ending balance: collectively evaluated | 594 | 691 | 481
Allowance for credit losses: Ending Balance | 594 | 691 | 485
Loans receivables: Ending balance: individually evaluated | 443 | 212 | 727
Loans receivables: Ending balance: collectively evaluated | 66,326 | 66,119 | 56,161
Total Gross Loans | 66,769 | 66,331 | 56,888
Consumer [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for credit losses: Beginning Balance | 78 | 24 | 14
Allowance for credit losses: Charge-offs | (467) |  |
Allowance for credit losses: Recoveries |  |  | 198
Allowance for credit losses: Provision Credit (benefit) | 405 | 47 | (188)
Allowance for credit losses: Ending balance: collectively evaluated | 16 | 78 | 24
Allowance for credit losses: Ending Balance | 16 | 78 | 24
Loans receivables: Ending balance: collectively evaluated | 2,235 | 3,643 | 3,240
Total Gross Loans | $ 2,235 | 3,643 | 3,240
Unallocated [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for credit losses: Beginning Balance |  | 180 | 182
Allowance for credit losses: Provision Credit (benefit) |  |  | (2)
Allowance for credit losses: Ending balance: collectively evaluated |  |  | 180
Allowance for credit losses: Ending Balance |  |  | 180
Effect of Adopting ASU No. 2016-13 ("CECL") [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for credit losses: Beginning Balance |  | (4,165) |
Allowance for credit losses: Ending Balance |  |  | (4,165)
Effect of Adopting ASU No. 2016-13 ("CECL") [Member] | Residential [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for credit losses: Beginning Balance |  | 144 |
Allowance for credit losses: Ending Balance |  |  | 144
Effect of Adopting ASU No. 2016-13 ("CECL") [Member] | Commercial & Multi-family [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for credit losses: Beginning Balance |  | (7,123) |
Allowance for credit losses: Ending Balance |  |  | (7,123)
Effect of Adopting ASU No. 2016-13 ("CECL") [Member] | Construction [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for credit losses: Beginning Balance |  | 1,387 |
Allowance for credit losses: Ending Balance |  |  | 1,387
Effect of Adopting ASU No. 2016-13 ("CECL") [Member] | Commercial Business [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for credit losses: Beginning Balance |  | 1,734 |
Allowance for credit losses: Ending Balance |  |  | 1,734
Effect of Adopting ASU No. 2016-13 ("CECL") [Member] | Business Express [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for credit losses: Beginning Balance |  | (316) |
Allowance for credit losses: Ending Balance |  |  | (316)
Effect of Adopting ASU No. 2016-13 ("CECL") [Member] | Home Equity [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for credit losses: Beginning Balance |  | 182 |
Allowance for credit losses: Ending Balance |  |  | 182
Effect of Adopting ASU No. 2016-13 ("CECL") [Member] | Consumer [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for credit losses: Beginning Balance |  | 7 |
Allowance for credit losses: Ending Balance |  |  | 7
Effect of Adopting ASU No. 2016-13 ("CECL") [Member] | Unallocated [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for credit losses: Beginning Balance |  | (180) |
Allowance for credit losses: Ending Balance |  |  | (180)
Adjusted Balance [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for credit losses: Beginning Balance |  | 28,208 |
Allowance for credit losses: Ending Balance |  |  | 28,208
Adjusted Balance [Member] | Residential [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for credit losses: Beginning Balance |  | 2,618 |
Allowance for credit losses: Ending Balance |  |  | 2,618
Adjusted Balance [Member] | Commercial & Multi-family [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for credit losses: Beginning Balance |  | 14,626 |
Allowance for credit losses: Ending Balance |  |  | 14,626
Adjusted Balance [Member] | Construction [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for credit losses: Beginning Balance |  | 3,481 |
Allowance for credit losses: Ending Balance |  |  | 3,481
Adjusted Balance [Member] | Commercial Business [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for credit losses: Beginning Balance |  | 6,229 |
Allowance for credit losses: Ending Balance |  |  | 6,229
Adjusted Balance [Member] | Business Express [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for credit losses: Beginning Balance |  | 556 |
Allowance for credit losses: Ending Balance |  |  | 556
Adjusted Balance [Member] | Home Equity [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for credit losses: Beginning Balance |  | 667 |
Allowance for credit losses: Ending Balance |  |  | 667
Adjusted Balance [Member] | Consumer [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Allowance for credit losses: Beginning Balance |  | $ 31 |
Allowance for credit losses: Ending Balance |  |  | $ 31

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