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Loans (Loan Portfolio) (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Principal Amount Outstanding | $ 4,382,760 | $ 3,998,718
Net Deferred Loan (Fees) Costs | 48,406 | 51,731
Loans, Net | 4,431,166 | 4,050,449
Allowance for credit losses - loans | (49,630) | (45,413)
Total loans, net | 4,381,536 | 4,005,036
Commercial Business [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Principal Amount Outstanding | 710,795 | 663,611
Net Deferred Loan (Fees) Costs | 743 | 638
Loans, Net | 711,538 | 664,249
Commercial Mortgage [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Principal Amount Outstanding | 1,989,357 | 1,683,814
Net Deferred Loan (Fees) Costs | (4,078) | (3,974)
Loans, Net | 1,985,279 | 1,679,840
Residential Real Estate Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Principal Amount Outstanding | 621,913 | 576,279
Net Deferred Loan (Fees) Costs | 13,296 | 13,681
Loans, Net | 635,209 | 589,960
Residential Real Estate Lines [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Principal Amount Outstanding | 73,341 | 74,432
Net Deferred Loan (Fees) Costs | 3,381 | 3,238
Loans, Net | 76,722 | 77,670
Consumer Indirect [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Principal Amount Outstanding | 947,035 | 985,580
Net Deferred Loan (Fees) Costs | 35,102 | 38,040
Loans, Net | 982,137 | 1,023,620
Other Consumer [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Principal Amount Outstanding | 40,319 | 15,002
Net Deferred Loan (Fees) Costs | (38) | 108
Loans, Net | $ 40,281 | $ 15,110

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- Definition Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481696/310-30-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(1) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (g) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480418/310-10-S99-4 + Details
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