Loans and Allowance For Credit Losses Loans (Summary Of Analysis Of Allowance For Loan Losses) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	$ 34,042	$ 32,246	$ 13,074
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	0	1,206
Provision for Loan, Lease, and Other Losses	1,985	12,743
Financing Receivable, Allowance for Credit Loss, Writeoff	(354)	(2,609)
Financing Receivable, Allowance for Credit Loss, Recovery	165	906
Commercial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	2,772	2,304	1,221
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	0	0
Provision for Loan, Lease, and Other Losses	589	85
Financing Receivable, Allowance for Credit Loss, Writeoff	(126)	(99)
Financing Receivable, Allowance for Credit Loss, Recovery	5	33
Commercial real estate owner occupied professional & medical [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	742	954	1,058
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	0	1
Provision for Loan, Lease, and Other Losses	(209)	1,290
Financing Receivable, Allowance for Credit Loss, Writeoff	(3)	(1,005)
Financing Receivable, Allowance for Credit Loss, Recovery	0	0
Commercial real estate owner occupied retail [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	4,001	3,173	820
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	0	152
Provision for Loan, Lease, and Other Losses	828	2,311
Financing Receivable, Allowance for Credit Loss, Writeoff	0	0
Financing Receivable, Allowance for Credit Loss, Recovery	0	162
Commercial real estate owner occupied other [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	538	610	821
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	0	1
Provision for Loan, Lease, and Other Losses	(72)	(104)
Financing Receivable, Allowance for Credit Loss, Writeoff	0	0
Financing Receivable, Allowance for Credit Loss, Recovery	0	29
Commercial real estate non-owner occupied hotels & motels [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	2,945	2,135	1,235
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	0	0
Provision for Loan, Lease, and Other Losses	810	1,836
Financing Receivable, Allowance for Credit Loss, Writeoff	0	0
Financing Receivable, Allowance for Credit Loss, Recovery	0	0
Commercial real estate non-owner occupied mini-storage [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	180	337	485
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	0	115
Provision for Loan, Lease, and Other Losses	(157)	48
Financing Receivable, Allowance for Credit Loss, Writeoff	0	0
Financing Receivable, Allowance for Credit Loss, Recovery	0	0
Multifamily [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	1,533	1,547	1,534
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	0	122
Provision for Loan, Lease, and Other Losses	(14)	(155)
Financing Receivable, Allowance for Credit Loss, Writeoff	0	0
Financing Receivable, Allowance for Credit Loss, Recovery	0	38
Commercial real estate non-owner occupied retail [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	1,331	981	964
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	0	101
Provision for Loan, Lease, and Other Losses	350	(22)
Financing Receivable, Allowance for Credit Loss, Writeoff	0	(343)
Financing Receivable, Allowance for Credit Loss, Recovery	0	2
Commercial real estate non-owner occupied other [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	1,168	1,104	1,721
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	0	58
Provision for Loan, Lease, and Other Losses	64	700
Financing Receivable, Allowance for Credit Loss, Writeoff	0	0
Financing Receivable, Allowance for Credit Loss, Recovery	0	19
Land and Land Improvements [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	3,911	4,084	600
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	0	111
Provision for Loan, Lease, and Other Losses	(178)	1,202
Financing Receivable, Allowance for Credit Loss, Writeoff	0	(7)
Financing Receivable, Allowance for Credit Loss, Recovery	5	42
Construction [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	5,620	4,648	242
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	0	251
Provision for Loan, Lease, and Other Losses	972	3,159
Financing Receivable, Allowance for Credit Loss, Writeoff	0	0
Financing Receivable, Allowance for Credit Loss, Recovery	0	0
Residential 1-4 family real estate personal residence [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	3,232	3,559	1,275
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	0	182
Provision for Loan, Lease, and Other Losses	(287)	980
Financing Receivable, Allowance for Credit Loss, Writeoff	(74)	(252)
Financing Receivable, Allowance for Credit Loss, Recovery	34	92
Residential 1-4 family real estate rental - small loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	2,537	2,736	532
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	0	96
Provision for Loan, Lease, and Other Losses	(207)	657
Financing Receivable, Allowance for Credit Loss, Writeoff	(14)	(140)
Financing Receivable, Allowance for Credit Loss, Recovery	22	138
Residential 1-4 family real estate rental - large loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	2,495	3,007	49
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	0	16
Provision for Loan, Lease, and Other Losses	(512)	58
Financing Receivable, Allowance for Credit Loss, Writeoff	0	0
Financing Receivable, Allowance for Credit Loss, Recovery	0	0
Home Equity [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	579	713	138
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	0	0
Provision for Loan, Lease, and Other Losses	(141)	246
Financing Receivable, Allowance for Credit Loss, Writeoff	0	(24)
Financing Receivable, Allowance for Credit Loss, Recovery	7	45
Mortgage Warehouse Lines [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	0	0	0
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	0	0
Provision for Loan, Lease, and Other Losses	0	0
Financing Receivable, Allowance for Credit Loss, Writeoff	0	0
Financing Receivable, Allowance for Credit Loss, Recovery	0	0
Consumer [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	242	216	379
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	0	0
Provision for Loan, Lease, and Other Losses	46	166
Financing Receivable, Allowance for Credit Loss, Writeoff	(52)	(239)
Financing Receivable, Allowance for Credit Loss, Recovery	32	148
Credit Card Receivable [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	15	17	0
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	0	0
Provision for Loan, Lease, and Other Losses	(1)	35
Financing Receivable, Allowance for Credit Loss, Writeoff	(3)	(40)
Financing Receivable, Allowance for Credit Loss, Recovery	2	10
Bank Overdrafts [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	201	121	$ 0
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	0	0
Provision for Loan, Lease, and Other Losses	104	251
Financing Receivable, Allowance for Credit Loss, Writeoff	(82)	(460)
Financing Receivable, Allowance for Credit Loss, Recovery	$ 58	148
Cumulative Effect, Period of Adoption, Adjustment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)		6,926
Cumulative Effect, Period of Adoption, Adjustment [Member] | Commercial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)		1,064
Cumulative Effect, Period of Adoption, Adjustment [Member] | Commercial real estate owner occupied professional & medical [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)		(390)
Cumulative Effect, Period of Adoption, Adjustment [Member] | Commercial real estate owner occupied other [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)		(137)
Cumulative Effect, Period of Adoption, Adjustment [Member] | Commercial real estate non-owner occupied hotels & motels [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)		(936)
Cumulative Effect, Period of Adoption, Adjustment [Member] | Commercial real estate non-owner occupied mini-storage [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)		(311)
Cumulative Effect, Period of Adoption, Adjustment [Member] | Multifamily [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)		8
Cumulative Effect, Period of Adoption, Adjustment [Member] | Commercial real estate non-owner occupied retail [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)		279
Cumulative Effect, Period of Adoption, Adjustment [Member] | Commercial real estate non-owner occupied other [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)		(1,394)
Cumulative Effect, Period of Adoption, Adjustment [Member] | Land and Land Improvements [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)		2,136
Cumulative Effect, Period of Adoption, Adjustment [Member] | Construction [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)		996
Cumulative Effect, Period of Adoption, Adjustment [Member] | Residential 1-4 family real estate personal residence [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)		1,282
Cumulative Effect, Period of Adoption, Adjustment [Member] | Residential 1-4 family real estate rental - small loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)		1,453
Cumulative Effect, Period of Adoption, Adjustment [Member] | Residential 1-4 family real estate rental - large loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)		2,884
Cumulative Effect, Period of Adoption, Adjustment [Member] | Home Equity [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)		308
Cumulative Effect, Period of Adoption, Adjustment [Member] | Mortgage Warehouse Lines [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)		0
Cumulative Effect, Period of Adoption, Adjustment [Member] | Consumer [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)		(238)
Cumulative Effect, Period of Adoption, Adjustment [Member] | Credit Card Receivable [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)		12
Cumulative Effect, Period of Adoption, Adjustment [Member] | Bank Overdrafts [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)		182
Commercial real estate owner occupied retail [Member] | Commercial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)		$ (272)