Loans and Leases (Recorded Investment, By Class, In Loans And Leases On Nonaccrual Status And Loans And Leases Greater Than 90 Days Past Due And Still Accruing) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Jan. 01, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	$ 174,571	$ 168,717	$ 114,946
Loans and leases greater than 90 days and accruing	2,970		3,291
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	2,175
Non-PCI Loans | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	43,578	42,407	42,407
Loans and leases greater than 90 days and accruing	1,024		1,094
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	559
Non-PCI Loans | Commercial | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	3,603	4,281	4,281
Loans and leases greater than 90 days and accruing	0		0
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	42
Non-PCI Loans | Commercial | Owner occupied commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	26,438	24,476
Loans and leases greater than 90 days and accruing	536
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	372
Non-PCI Loans | Commercial | Non-owner occupied commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	5,679	5,965
Loans and leases greater than 90 days and accruing	0
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	47
Non-PCI Loans | Commercial | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	7,858	7,685	7,365
Loans and leases greater than 90 days and accruing	488		1,094
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	98
Non-PCI Loans | Commercial | Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing			29,733
Loans and leases greater than 90 days and accruing			0
Non-PCI Loans | Commercial | Other commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing			708
Loans and leases greater than 90 days and accruing			0
Non-PCI Loans | Commercial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing			320
Loans and leases greater than 90 days and accruing			0
Non-PCI Loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	77,759	72,539	72,539
Loans and leases greater than 90 days and accruing	1,909		2,197
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	746
Non-PCI Loans | Consumer | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	2,881	2,828	2,828
Loans and leases greater than 90 days and accruing	0		0
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	23
Non-PCI Loans | Consumer | Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	49,220	44,357	44,357
Loans and leases greater than 90 days and accruing	0		45
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	355
Non-PCI Loans | Consumer | Revolving mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	22,067	22,411
Loans and leases greater than 90 days and accruing	0
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	291
Non-PCI Loans | Consumer | Consumer auto
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	2,832	2,145
Loans and leases greater than 90 days and accruing	0
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	38
Non-PCI Loans | Consumer | Consumer other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	759	798
Loans and leases greater than 90 days and accruing	1,909
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	39
Non-PCI Loans | Consumer | Revolving mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing			22,411
Loans and leases greater than 90 days and accruing			0
Non-PCI Loans | Consumer | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing			2,943
Loans and leases greater than 90 days and accruing			$ 2,152
PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	53,234	53,771
Loans and leases greater than 90 days and accruing	37
Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method	$ 870
Adoption of ASC 326 | PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing		$ 47,000