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Loans (Changes in the Allowance for Credit Losses) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	$ 42,452	$ 46,365	$ 39,676	$ 52,420
Charge-offs	(4,514)	(1,959)	(10,655)	(6,552)
Recoveries	2,361	1,372	8,755	5,472
Provision (benefit)	3,807	(334)	6,330	(5,896)
Ending balance	44,106	45,444	44,106	45,444
Commercial Business [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	10,140	11,005	11,099	13,580
Charge-offs	(20)	(218)	(262)	(396)
Recoveries	116	168	305	785
Provision (benefit)	1,288	889	382	(2,125)
Ending balance	11,524	11,844	11,524	11,844
Commercial Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	12,064	21,662	14,777	21,763
Charge-offs	0	0	0	(203)
Recoveries	1	0	2,020	7
Provision (benefit)	2,054	(2,210)	(2,678)	(2,115)
Ending balance	14,119	19,452	14,119	19,452
Residential Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	2,140	2,299	1,604	3,924
Charge-offs	0	(36)	(56)	(103)
Recoveries	4	15	19	79
Provision (benefit)	210	(302)	787	(1,924)
Ending balance	2,354	1,976	2,354	1,976
Residential Real Estate Lines [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	509	395	379	674
Charge-offs	(38)	(60)	(38)	(130)
Recoveries	3	0	20	0
Provision (benefit)	180	10	293	(199)
Ending balance	654	345	654	345
Consumer Indirect [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	17,332	10,748	11,611	12,165
Charge-offs	(4,058)	(1,395)	(9,216)	(4,965)
Recoveries	2,168	1,130	6,129	4,383
Provision (benefit)	(260)	1,096	6,658	(4)
Ending balance	15,182	11,579	15,182	11,579
Other Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	267	256	206	314
Charge-offs	(398)	(250)	(1,083)	(755)
Recoveries	69	59	262	218
Provision (benefit)	335	183	888	471
Ending balance	$ 273	$ 248	$ 273	$ 248

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