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Loans (Loan Portfolio) (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Jun. 30, 2024 | Dec. 31, 2023 | Sep. 30, 2023 | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | --- | --- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total Loans | $ 4,402,989 |  | $ 4,462,139 |  |  |
Principal Amount Outstanding, Total | 4,363,201 |  | 4,416,251 |  |  |
Net Deferred Loan (Fees) Costs | 39,788 |  | 45,888 |  |  |
Total loans, net | 4,358,311 |  | 4,411,057 |  |  |
Allowance for credit losses - loans | (44,678) | $ (43,952) | (51,082) | $ (49,630) | $ (49,836) | $ (45,413)
Commercial Business [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total Loans | 654,519 |  | 735,700 |  |  |
Principal Amount Outstanding, Total | 653,921 |  | 734,947 |  |  |
Net Deferred Loan (Fees) Costs | 598 |  | 753 |  |  |
Allowance for credit losses - loans | (8,475) | (12,246) | (13,102) | (12,786) | (13,418) | (12,585)
Commercial Mortgage [Member] | Construction [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total Loans | 533,506 |  | 493,003 |  |  |
Principal Amount Outstanding, Total | 535,124 |  | 495,198 |  |  |
Net Deferred Loan (Fees) Costs | (1,618) |  | (2,195) |  |  |
Allowance for credit losses - loans | (5,402) | (3,746) | (3,710) | (3,613) | (3,868) | (2,657)
Commercial Mortgage [Member] | Multifamily [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total Loans | 467,527 |  | 452,155 |  |  |
Principal Amount Outstanding, Total | 468,064 |  | 452,778 |  |  |
Net Deferred Loan (Fees) Costs | (537) |  | (623) |  |  |
Allowance for credit losses - loans | (2,609) | (3,449) | (4,009) | (4,217) | (4,260) | (3,409)
Commercial Mortgage [Member] | Non-Owner Occupied [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total Loans | 814,392 |  | 788,515 |  |  |
Principal Amount Outstanding, Total | 815,369 |  | 789,631 |  |  |
Net Deferred Loan (Fees) Costs | (977) |  | (1,116) |  |  |
Allowance for credit losses - loans | (7,478) | (6,052) | (6,074) | (6,212) | (6,407) | (6,237)
Commercial Mortgage [Member] | Owner Occupied [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total Loans | 290,216 |  | 271,646 |  |  |
Principal Amount Outstanding, Total | 290,221 |  | 271,662 |  |  |
Net Deferred Loan (Fees) Costs | (5) |  | (16) |  |  |
Allowance for credit losses - loans | (4,200) | (2,118) | (2,065) | (2,235) | (2,291) | (2,109)
Residential Real Estate Loans [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total Loans | 648,241 |  | 649,822 |  |  |
Principal Amount Outstanding, Total | 636,870 |  | 637,173 |  |  |
Net Deferred Loan (Fees) Costs | 11,371 |  | 12,649 |  |  |
Allowance for credit losses - loans | (3,795) | (4,211) | (5,286) | (3,859) | (4,646) | (3,301)
Residential Real Estate Lines [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total Loans | 76,203 |  | 77,367 |  |  |
Principal Amount Outstanding, Total | 72,926 |  | 73,972 |  |  |
Net Deferred Loan (Fees) Costs | 3,277 |  | 3,395 |  |  |
Allowance for credit losses - loans | (833) | (769) | (764) | (537) | (710) | (608)
Consumer Indirect [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total Loans | 874,651 |  | 948,831 |  |  |
Principal Amount Outstanding, Total | 846,903 |  | 915,723 |  |  |
Net Deferred Loan (Fees) Costs | 27,748 |  | 33,108 |  |  |
Allowance for credit losses - loans | (11,346) | (10,842) | (14,099) | (14,606) | (13,306) | (14,238)
Other Consumer [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total Loans | 43,734 |  | 45,100 |  |  |
Principal Amount Outstanding, Total | 43,803 |  | 45,167 |  |  |
Net Deferred Loan (Fees) Costs | (69) |  | (67) |  |  |
Allowance for credit losses - loans | $ (540) | $ (519) | $ (1,973) | $ (1,565) | $ (930) | $ (269)

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