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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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Loans (Summary Of Activity In Allowance For Loan And Lease Losses) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Apr. 01, 2021	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Provision for Loan, Lease, and Other Losses		$ 3,088	$ 11,834	$ (1,661)	$ 28,803
Off-Balance Sheet, Credit Loss, Liability		2,200		2,200		$ 2,400	$ 2,900
Financing Receivable, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase		493		493	2,686
Paycheck Protection Program [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Ending balance		0		0
Construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 829	829	1,742	1,887
Provision for Loan, Lease, and Other Losses		85	920	(973)	2,011
Financing Receivable, Allowance for Credit Loss, Writeoff		0	0	0	0
Financing Receivable, Allowance for Credit Loss, Recovery		0	0	0	0
Ending balance		914	2,662	914	2,662
Financing Receivable, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase		0		0	51
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	17,834	17,834	12,142	17,536
Provision for Loan, Lease, and Other Losses		(601)	7,135	(146)	10,622
Financing Receivable, Allowance for Credit Loss, Writeoff		(4)	(135)	(161)	(145)
Financing Receivable, Allowance for Credit Loss, Recovery		4	6	4	122
Ending balance		17,233	19,148	17,233	19,148
Financing Receivable, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase		0		0	1,356
Commercial Portfolio Segment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	10,108	10,108	8,743	12,763
Provision for Loan, Lease, and Other Losses		(1,435)	573	(3,797)	3,229
Financing Receivable, Allowance for Credit Loss, Writeoff		(5)	(15)	(298)	(952)
Financing Receivable, Allowance for Credit Loss, Recovery		18	805	18	2,009
Ending balance		8,686	10,106	8,686	10,106
Financing Receivable, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase		0		0	860
Commercial Portfolio Segment \| One Commercial relationship [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Provision for Loan, Lease, and Other Losses				916
Premium finance
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	1,160	1,160		1,095
Provision for Loan, Lease, and Other Losses		(155)		(74)
Financing Receivable, Allowance for Credit Loss, Writeoff		7		23
Financing Receivable, Allowance for Credit Loss, Recovery		0		0
Ending balance		998		998
Financing Receivable, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase		0		0
Residential Portfolio Segment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	4,935	4,935	5,744	6,044
Provision for Loan, Lease, and Other Losses		(2)	552	(993)	1,997
Financing Receivable, Allowance for Credit Loss, Writeoff		(136)	16	(269)	(134)
Financing Receivable, Allowance for Credit Loss, Recovery		40	100	55	157
Ending balance		4,837	6,380	4,837	6,380
Financing Receivable, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase		0		0	383
Home equity lines of credit
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	1,494	1,494	1,695	1,860
Provision for Loan, Lease, and Other Losses		14	61	(344)	197
Financing Receivable, Allowance for Credit Loss, Writeoff		(4)	9	(16)	(23)
Financing Receivable, Allowance for Credit Loss, Recovery		0	8	4	9
Ending balance		1,504	1,755	1,504	1,755
Financing Receivable, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase		0		0	2
Consumer, indirect
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	7,522	7,522	10,878	8,030
Provision for Loan, Lease, and Other Losses		1,525	1,679	1,417	7,764
Financing Receivable, Allowance for Credit Loss, Writeoff		(269)	(336)	(774)	(1,057)
Financing Receivable, Allowance for Credit Loss, Recovery		63	72	168	197
Ending balance		8,841	12,293	8,841	12,293
Financing Receivable, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase		0		0	0
Consumer, direct
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	970	970	1,803	1,081
Provision for Loan, Lease, and Other Losses		211	179	110	1,140
Financing Receivable, Allowance for Credit Loss, Writeoff		(31)	(51)	(67)	(113)
Financing Receivable, Allowance for Credit Loss, Recovery		11	10	37	24
Ending balance		1,161	1,941	1,161	1,941
Financing Receivable, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase		0		0	34
Deposit account overdrafts
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	45	45	86	63
Provision for Loan, Lease, and Other Losses		53	61	84	206
Financing Receivable, Allowance for Credit Loss, Writeoff		(89)	(119)	(192)	(332)
Financing Receivable, Allowance for Credit Loss, Recovery		44	49	98	109
Ending balance		53	77	53	77
Financing Receivable, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase		0		0	0
Total loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	44,897	44,897	42,833	50,359
Provision for Loan, Lease, and Other Losses		44	11,160	(4,367)	27,166
Financing Receivable, Allowance for Credit Loss, Writeoff		1,070	(681)	2,325	(2,756)
Financing Receivable, Allowance for Credit Loss, Recovery		290	1,050	494	2,627
Ending balance		47,942	$ 54,362	47,942	$ 54,362
Finance Leases Portfolio Segment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				0
Provision for Loan, Lease, and Other Losses	3,288	349		349
Financing Receivable, Allowance for Credit Loss, Writeoff				525
Financing Receivable, Allowance for Credit Loss, Recovery				110
Ending balance		3,715		3,715
Financing Receivable, Allowance for Credit Loss, Purchased with Credit Deterioration, Increase	(493)	$ 493		493
Finance Leases Portfolio Segment \| North Star Leasing
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Provision for Loan, Lease, and Other Losses	$ 3,288			$ 3,288