Allowance for Credit Losses on Loans (Allowance for Credit Losses on Loans Rollforward Analysis) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Jan. 01, 2020
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	$ 39,088	$ 44,106	$ 27,014
Adoption of ASC 326				$ 6,501
Charge-offs	(184)	(663)	(1,317)
Recoveries	552	246	172
Provision	(1,429)	(4,601)	11,736
Ending Balance	38,027	39,088	44,106
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	18,933	22,065	14,741
Adoption of ASC 326				3,405
Charge-offs	0	0	(356)
Recoveries	445	0	51
Provision	(943)	(3,132)	4,224
Ending Balance	18,435	18,933	22,065
Commercial & Industrial [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	10,832	12,228	3,921
Adoption of ASC 326				3,029
Charge-offs	(36)	(307)	(586)
Recoveries	29	41	24
Provision	(469)	(1,130)	5,840
Ending Balance	10,356	10,832	12,228
Total Commercial [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	29,765	34,293	18,662
Adoption of ASC 326				6,434
Charge-offs	(36)	(307)	(942)
Recoveries	474	41	75
Provision	(1,412)	(4,262)	10,064
Ending Balance	28,791	29,765	34,293
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	7,860	8,042	6,615
Adoption of ASC 326				221
Charge-offs	0	(107)	(99)
Recoveries	21	89	20
Provision	(141)	(164)	1,285
Ending Balance	7,740	7,860	8,042
Home Equity [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	1,069	1,300	1,390
Adoption of ASC 326				(106)
Charge-offs	0	(183)	(224)
Recoveries	12	91	52
Provision	34	(139)	188
Ending Balance	1,115	1,069	1,300
Other Consumer [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	394	471	347
Adoption of ASC 326				(48)
Charge-offs	(148)	(66)	(52)
Recoveries	45	25	25
Provision	90	(36)	199
Ending Balance	381	394	471
Total Consumer [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	1,463	1,771	1,737
Adoption of ASC 326				$ (154)
Charge-offs	(148)	(249)	(276)
Recoveries	57	116	77
Provision	124	(175)	387
Ending Balance	$ 1,496	$ 1,463	$ 1,771

Amount of increase in allowance for credit loss on financing receivable from recovery.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of writeoff of financing receivable, charged against allowance for credit loss.

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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

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Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

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Adoption of Topic 326 on ACL

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