Loans and Leases, Changes in Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
ACL for Loans and Leases [Roll Forward]
Balance at beginning of period	$ 75,032	$ 71,112	$ 74,965	$ 66,885	$ 66,885
Provision for/(reversal of) credit losses	1,000	3,000	1,000	7,000
Charge-offs	(255)	(15)	(281)	(47)	(60)
Recoveries	39	62	132	321
Net (charge-offs)/recoveries	(216)	47	(149)	274
Balance at end of period	75,816	74,159	75,816	74,159	74,965
ACL for Unfunded Commitments [Roll Forward]
Balance at beginning of period	3,690	2,090	3,690	2,090	2,090
Provision for/(reversal of) credit losses	(1,000)	0	(1,000)	0
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Net (charge-offs)/recoveries	0	0	0	0
Balance at end of period	2,690	2,090	2,690	2,090	3,690
Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	78,722	73,202	78,655	68,975	68,975
Provision for/(reversal of) credit losses	0	3,000	0	7,000
Charge-offs	(255)	(15)	(281)	(47)
Recoveries	39	62	132	321
Net (charge-offs)/recoveries	(216)	47	(149)	274
Balance at end of period	78,506	76,249	78,506	76,249	78,655
Commercial & Agricultural R/E [Member]
ACL for Loans and Leases [Roll Forward]
Balance at beginning of period	39,094	34,695	33,837	32,551	32,551
Provision for/(reversal of) credit losses	5,362	(730)	10,619	1,244
Charge-offs	0	0	0	0
Recoveries	0	0	0	170
Net (charge-offs)/recoveries	0	0	0	170
Balance at end of period	44,456	33,965	44,456	33,965	33,837
Construction [Member]
ACL for Loans and Leases [Roll Forward]
Balance at beginning of period	2,165	3,195	4,432	3,026	3,026
Provision for/(reversal of) credit losses	1,308	417	(959)	586
Charge-offs	0	0	0	0	0
Recoveries	0	0	0	0
Net (charge-offs)/recoveries	0	0	0	0
Balance at end of period	3,473	3,612	3,473	3,612	4,432
Residential & Home Equity [Member]
ACL for Loans and Leases [Roll Forward]
Balance at beginning of period	7,584	7,179	7,770	7,508	7,508
Provision for/(reversal of) credit losses	(593)	268	(793)	(78)
Charge-offs	(29)	0	(29)	(14)	(14)
Recoveries	5	11	19	42
Net (charge-offs)/recoveries	(24)	11	(10)	28
Balance at end of period	6,967	7,458	6,967	7,458	7,770
Commercial & Agricultural [Member]
ACL for Loans and Leases [Roll Forward]
Balance at beginning of period	17,880	24,194	22,252	21,705	21,705
Provision for/(reversal of) credit losses	(2,988)	2,748	(7,399)	5,196
Charge-offs	(200)	0	(200)	0
Recoveries	28	43	67	84
Net (charge-offs)/recoveries	(172)	43	(133)	84
Balance at end of period	14,720	26,985	14,720	26,985	22,252
Commercial Leases [Member]
ACL for Loans and Leases [Roll Forward]
Balance at beginning of period	7,597	1,657	6,537	1,924	1,924
Provision for/(reversal of) credit losses	(1,628)	310	(568)	43
Charge-offs	0	0	0	0	0
Recoveries	0	0	0	0
Net (charge-offs)/recoveries	0	0	0	0
Balance at end of period	5,969	1,967	5,969	1,967	6,537
Consumer and Other [Member]
ACL for Loans and Leases [Roll Forward]
Balance at beginning of period	712	192	137	171	171
Provision for/(reversal of) credit losses	(461)	(13)	100	9
Charge-offs	(26)	(15)	(52)	(33)	(46)
Recoveries	6	8	46	25
Net (charge-offs)/recoveries	(20)	(7)	(6)	(8)
Balance at end of period	$ 231	$ 172	$ 231	$ 172	$ 137