Loans (Loan Portfolio) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal Amount Outstanding	$ 4,192,142	$ 3,998,718
Net Deferred Loan (Fees) Costs	51,190	51,731
Loans, Net	4,243,332	4,050,449
Allowance for credit losses - loans	(47,528)	(45,413)
Total loans, net	4,195,804	4,005,036
Commercial Business [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal Amount Outstanding	694,427	663,611
Net Deferred Loan (Fees) Costs	683	638
Loans, Net	695,110	664,249
Commercial Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal Amount Outstanding	1,845,762	1,683,814
Net Deferred Loan (Fees) Costs	(4,281)	(3,974)
Loans, Net	1,841,481	1,679,840
Residential Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal Amount Outstanding	578,363	576,279
Net Deferred Loan (Fees) Costs	13,483	13,681
Loans, Net	591,846	589,960
Residential Real Estate Lines [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal Amount Outstanding	72,793	74,432
Net Deferred Loan (Fees) Costs	3,293	3,238
Loans, Net	76,086	77,670
Consumer Indirect [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal Amount Outstanding	984,302	985,580
Net Deferred Loan (Fees) Costs	37,900	38,040
Loans, Net	1,022,202	1,023,620
Other Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal Amount Outstanding	16,495	15,002
Net Deferred Loan (Fees) Costs	112	108
Loans, Net	$ 16,607	$ 15,110

Loans and leases receivable deferred loan (fees) costs.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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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://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section S99
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- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

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- Definition

Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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