Allowance For Credit Losses (Financing Receivable, Allowance for Credit Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan loss, Beginning balance	$ 11,589	$ 15,966
New Accounting Pronouncement Or Change In Accounting Principle, Effect Of Adoption, Quantification	(2,335)
Allowance for loan loss, Charge-offs	(1,746)	(1,229)
Allowance for loan loss, Recoveries	818	758
Allowance for loan loss, Provision	7,972	(849)
Allowance for loan loss, Ending balance	24,393	14,646
Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
New Accounting Pronouncement Or Change In Accounting Principle, Effect Of Adoption, Quantification	5,760
Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan loss, Beginning balance	2,059	4,060
Allowance for loan loss, Charge-offs	(77)	0
Allowance for loan loss, Recoveries	9	135
Allowance for loan loss, Provision	2,149	(1,225)
Allowance for loan loss, Ending balance	5,855	2,970
Commercial and industrial \| Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
New Accounting Pronouncement Or Change In Accounting Principle, Effect Of Adoption, Quantification	1,715
Commercial real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan loss, Beginning balance	2,606	4,495
Allowance for loan loss, Charge-offs	(383)	(45)
Allowance for loan loss, Recoveries	203	32
Allowance for loan loss, Provision	3,709	158
Allowance for loan loss, Ending balance	9,389	4,640
Commercial real estate \| Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
New Accounting Pronouncement Or Change In Accounting Principle, Effect Of Adoption, Quantification	3,254
Residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan loss, Beginning balance	3,448	4,116
Allowance for loan loss, Charge-offs	(483)	(328)
Allowance for loan loss, Recoveries	95	75
Allowance for loan loss, Provision	1,759	(43)
Allowance for loan loss, Ending balance	6,958	3,820
Residential real estate \| Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
New Accounting Pronouncement Or Change In Accounting Principle, Effect Of Adoption, Quantification	2,139
Home equity
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan loss, Beginning balance	1,187	1,268
Allowance for loan loss, Charge-offs	(45)	(46)
Allowance for loan loss, Recoveries	47	0
Allowance for loan loss, Provision	111	26
Allowance for loan loss, Ending balance	702	1,248
Home equity \| Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
New Accounting Pronouncement Or Change In Accounting Principle, Effect Of Adoption, Quantification	(598)
Consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan loss, Beginning balance	975	319
Allowance for loan loss, Charge-offs	(55)	(185)
Allowance for loan loss, Recoveries	13	97
Allowance for loan loss, Provision	110	237
Allowance for loan loss, Ending balance	233	468
Consumer \| Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
New Accounting Pronouncement Or Change In Accounting Principle, Effect Of Adoption, Quantification	(810)
DDA overdrafts
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan loss, Beginning balance	1,314	1,708
Allowance for loan loss, Charge-offs	(703)	(625)
Allowance for loan loss, Recoveries	451	419
Allowance for loan loss, Provision	134	(2)
Allowance for loan loss, Ending balance	1,256	$ 1,500
DDA overdrafts \| Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Roll Forward]
New Accounting Pronouncement Or Change In Accounting Principle, Effect Of Adoption, Quantification	$ 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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