Loans (Changes in the Allowance for Credit Losses) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	$ 43,075	$ 47,528	$ 51,082	$ 45,413
Charge-offs	(4,209)	(3,519)	(10,720)	(8,627)
Recoveries	3,087	2,883	6,477	5,902
Provision (benefit)	1,999	2,944	(2,887)	7,148
Ending balance	43,952	49,836	43,952	49,836
Commercial Business [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	12,991	12,911	13,102	12,585
Charge-offs	(53)	(90)	(70)	(117)
Recoveries	46	57	100	208
Provision (benefit)	(738)	540	(886)	742
Ending balance	12,246	13,418	12,246	13,418
Commercial Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	14,113	15,195	15,858	14,412
Charge-offs	0	(18)	0	(18)
Recoveries	3	2	4	4
Provision (benefit)	1,249	1,647	(497)	2,428
Ending balance	15,365	16,826	15,365	16,826
Residential Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	4,630	4,213	5,286	3,301
Charge-offs	(99)	(39)	(107)	(102)
Recoveries	3	26	7	31
Provision (benefit)	(323)	446	(975)	1,416
Ending balance	4,211	4,646	4,211	4,646
Residential Real Estate Lines [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	794	651	764	608
Charge-offs	0	(25)	0	(41)
Recoveries	0	0	0	0
Provision (benefit)	(25)	84	5	143
Ending balance	769	710	769	710
Consumer Indirect [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	9,854	14,117	14,099	14,238
Charge-offs	(3,746)	(3,009)	(9,963)	(7,629)
Recoveries	2,902	2,709	6,146	5,491
Provision (benefit)	1,832	(511)	560	1,206
Ending balance	10,842	13,306	10,842	13,306
Other Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	693	441	1,973	269
Charge-offs	(311)	(338)	(580)	(720)
Recoveries	133	89	220	168
Provision (benefit)	4	738	(1,094)	1,213
Ending balance	$ 519	$ 930	$ 519	$ 930