Loans and Leases, Changes in Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2022
Allowance for Credit Losses [Roll Forward]
Beginning balance	$ 61,032	$ 61,007
Provision / (recapture) for credit losses	1,107	1,107
Charge-offs	(285)	(294)
Recoveries	226	260
Net (charge-offs) / recoveries	(59)	(34)
Ending balance	62,080	62,080
Cumulative Effect, Period of Adoption, Adjustment [Member] | ASC 326 [Member]
Allowance for Credit Losses [Roll Forward]
Beginning balance		0
Commercial & Agricultural R/E [Member]
Allowance for Credit Losses [Roll Forward]
Beginning balance	32,511	38,149
Provision / (recapture) for credit losses	2,205	2,757
Charge-offs	0	0
Recoveries	0	0
Net (charge-offs) / recoveries	0	0
Ending balance	34,716	34,716
Commercial & Agricultural R/E [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASC 326 [Member]
Allowance for Credit Losses [Roll Forward]
Beginning balance		(6,190)
Construction [Member]
Allowance for Credit Losses [Roll Forward]
Beginning balance	3,777	1,456
Provision / (recapture) for credit losses	(901)	(435)
Charge-offs	0	0
Recoveries	0	0
Net (charge-offs) / recoveries	0	0
Ending balance	2,876	2,876
Construction [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASC 326 [Member]
Allowance for Credit Losses [Roll Forward]
Beginning balance		1,855
Residential & Home Equity [Member]
Allowance for Credit Losses [Roll Forward]
Beginning balance	6,759	2,847
Provision / (recapture) for credit losses	10	876
Charge-offs	0	0
Recoveries	105	119
Net (charge-offs) / recoveries	105	119
Ending balance	6,874	6,874
Residential & Home Equity [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASC 326 [Member]
Allowance for Credit Losses [Roll Forward]
Beginning balance		3,032
Commercial & Agricultural [Member]
Allowance for Credit Losses [Roll Forward]
Beginning balance	16,098	16,954
Provision / (recapture) for credit losses	(131)	(1,831)
Charge-offs	(276)	(276)
Recoveries	117	135
Net (charge-offs) / recoveries	(159)	(141)
Ending balance	15,808	15,808
Commercial & Agricultural [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASC 326 [Member]
Allowance for Credit Losses [Roll Forward]
Beginning balance		826
Commercial Leases [Member]
Allowance for Credit Losses [Roll Forward]
Beginning balance	1,466	938
Provision / (recapture) for credit losses	179	78
Charge-offs	0	0
Recoveries	0	0
Net (charge-offs) / recoveries	0	0
Ending balance	1,645	1,645
Commercial Leases [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASC 326 [Member]
Allowance for Credit Losses [Roll Forward]
Beginning balance		629
Consumer and Other [Member]
Allowance for Credit Losses [Roll Forward]
Beginning balance	421	663
Provision / (recapture) for credit losses	(255)	(338)
Charge-offs	(9)	(18)
Recoveries	4	6
Net (charge-offs) / recoveries	(5)	(12)
Ending balance	$ 161	161
Consumer and Other [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASC 326 [Member]
Allowance for Credit Losses [Roll Forward]
Beginning balance		$ (152)