Allowance For Credit Losses (Financing Receivable, Allowance for Credit Loss) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan loss, Beginning balance	$ 25,199	$ 13,795	$ 11,589	$ 15,966
Impact of adopting CECL			(2,335)
Allowance for loan loss, Charge-offs	(1,838)	(1,521)	(4,655)	(4,007)
Allowance for loan loss, Recoveries	480	638	1,925	2,402
Allowance for loan loss, Provision	1,026	274	10,248	(1,175)
Allowance for loan loss, Ending balance	24,867	13,186	24,867	13,186
Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Impact of adopting CECL			5,760
Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan loss, Beginning balance	6,266	2,796	2,059	4,060
Allowance for loan loss, Charge-offs	(757)	(17)	(834)	(68)
Allowance for loan loss, Recoveries	3	43	17	183
Allowance for loan loss, Provision	(1,753)	(118)	802	(1,471)
Allowance for loan loss, Ending balance	3,759	2,704	3,759	2,704
Commercial and industrial \| Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Impact of adopting CECL			1,715
Commercial real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan loss, Beginning balance	10,090	3,469	2,606	4,495
Allowance for loan loss, Charge-offs	(75)	(216)	(497)	(394)
Allowance for loan loss, Recoveries	44	7	375	614
Allowance for loan loss, Provision	944	(164)	5,265	(1,619)
Allowance for loan loss, Ending balance	11,003	3,096	11,003	3,096
Commercial real estate \| Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Impact of adopting CECL			3,254
Residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan loss, Beginning balance	7,323	3,959	3,448	4,116
Allowance for loan loss, Charge-offs	(252)	(291)	(1,111)	(922)
Allowance for loan loss, Recoveries	24	157	127	282
Allowance for loan loss, Provision	1,185	(187)	3,677	162
Allowance for loan loss, Ending balance	8,280	3,638	8,280	3,638
Residential real estate \| Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Impact of adopting CECL			2,139
Home equity
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan loss, Beginning balance	647	1,211	1,187	1,268
Allowance for loan loss, Charge-offs	(126)	(43)	(332)	(160)
Allowance for loan loss, Recoveries	33	0	89	0
Allowance for loan loss, Provision	115	25	323	85
Allowance for loan loss, Ending balance	669	1,193	669	1,193
Home equity \| Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Impact of adopting CECL			(598)
Consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan loss, Beginning balance	120	509	975	319
Allowance for loan loss, Charge-offs	(74)	(182)	(165)	(478)
Allowance for loan loss, Recoveries	42	68	183	211
Allowance for loan loss, Provision	172	248	77	591
Allowance for loan loss, Ending balance	260	643	260	643
Consumer \| Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Impact of adopting CECL			(810)
DDA overdrafts
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan loss, Beginning balance	753	1,851	1,314	1,708
Allowance for loan loss, Charge-offs	(554)	(772)	(1,716)	(1,985)
Allowance for loan loss, Recoveries	334	363	1,134	1,112
Allowance for loan loss, Provision	363	470	104	1,077
Allowance for loan loss, Ending balance	$ 896	$ 1,912	896	$ 1,912
DDA overdrafts \| Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Impact of adopting CECL			$ 60

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- Definition

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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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 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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