Allowance for Credit Losses on Loans (Allowance for Credit Losses on Loans Rollforward Analysis) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Jan. 01, 2020
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	$ 44,106	$ 27,014	$ 27,072
Charge-offs	(663)	(1,317)	(2,020)
Recoveries	246	172	387
Provision	(4,601)	11,736	1,575
Ending Balance	39,088	44,106	27,014
Adoption of ASC 326				$ 6,501
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	22,065	14,741	15,381
Charge-offs	0	(356)	(1,028)
Recoveries	0	51	125
Provision	(3,132)	4,224	263
Ending Balance	18,933	22,065	14,741
Adoption of ASC 326				3,405
Commercial & Industrial [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	12,228	3,921	5,847
Charge-offs	(307)	(586)	(21)
Recoveries	41	24	168
Provision	(1,130)	5,840	(2,073)
Ending Balance	10,832	12,228	3,921
Adoption of ASC 326				3,029
Total Commercial [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	34,293	18,662	21,228
Charge-offs	(307)	(942)	(1,049)
Recoveries	41	75	293
Provision	(4,262)	10,064	(1,810)
Ending Balance	29,765	34,293	18,662
Adoption of ASC 326				6,434
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	8,042	6,615	3,987
Charge-offs	(107)	(99)	(486)
Recoveries	89	20	0
Provision	(164)	1,285	3,114
Ending Balance	7,860	8,042	6,615
Adoption of ASC 326				221
Home Equity [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	1,300	1,390	1,603
Charge-offs	(183)	(224)	(390)
Recoveries	91	52	72
Provision	(139)	188	105
Ending Balance	1,069	1,300	1,390
Adoption of ASC 326				(106)
Other Consumer [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	471	347	254
Charge-offs	(66)	(52)	(95)
Recoveries	25	25	22
Provision	(36)	199	166
Ending Balance	394	471	347
Adoption of ASC 326				(48)
Total Consumer [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	1,771	1,737	1,857
Charge-offs	(249)	(276)	(485)
Recoveries	116	77	94
Provision	(175)	387	271
Ending Balance	$ 1,463	$ 1,771	$ 1,737
Adoption of ASC 326				$ (154)

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

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

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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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