Allowance For Credit Losses (Financing Receivable, Allowance for Credit Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 20,016	$ 25,199	$ 24,549	$ 11,589
Charge-offs	(1,093)	(1,838)	(4,417)	(4,655)
Recoveries	553	480	1,784	1,925
(Recovery of) provision for credit losses	(725)	1,026	(3,165)	10,248
Ending balance	18,751	24,867	18,751	24,867
Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				5,760
Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	3,356	6,266	3,644	2,059
Charge-offs	0	(757)	(245)	(834)
Recoveries	69	3	140	17
(Recovery of) provision for credit losses	(63)	(1,753)	(177)	802
Ending balance	3,362	3,759	3,362	3,759
Commercial and industrial | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				1,715
Commercial real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	8,367	10,090	10,997	2,606
Charge-offs	(392)	(75)	(2,111)	(497)
Recoveries	18	44	197	375
(Recovery of) provision for credit losses	(191)	944	(1,281)	5,265
Ending balance	7,802	11,003	7,802	11,003
Commercial real estate | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				3,254
Residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	6,791	7,323	8,093	3,448
Charge-offs	(18)	(252)	(197)	(1,111)
Recoveries	29	24	120	127
(Recovery of) provision for credit losses	(828)	1,185	(2,042)	3,677
Ending balance	5,974	8,280	5,974	8,280
Residential real estate | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				2,139
Home equity
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	535	647	630	1,187
Charge-offs	(47)	(126)	(119)	(332)
Recoveries	58	33	84	89
(Recovery of) provision for credit losses	(74)	115	(123)	323
Ending balance	472	669	472	669
Home equity | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				(598)
Consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	178	120	163	975
Charge-offs	(3)	(74)	(229)	(165)
Recoveries	72	42	215	183
(Recovery of) provision for credit losses	(97)	172	1	77
Ending balance	150	260	150	260
Consumer | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				(810)
Demand deposit account (DDA) overdrafts
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	789	753	1,022	1,314
Charge-offs	(633)	(554)	(1,516)	(1,716)
Recoveries	307	334	1,028	1,134
(Recovery of) provision for credit losses	528	363	457	104
Ending balance	$ 991	$ 896	$ 991	896
Demand deposit account (DDA) overdrafts | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				$ 60