Loans and Allowance For Credit Losses Loans (Summary Of Imparied Financing Receivables) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for impairment	$ 37,710
Financing Receivable, Collectively Evaluated for Impairment	2,214,094
Loans and Leases Receivable, Gross	2,251,804
Allowance related to: Loans individually evaluated for impairment	3,133
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	26,221
Financing Receivable, Allowance for Credit Loss	29,354	$ 13,074	$ 13,047
Commercial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for impairment	4,242
Financing Receivable, Collectively Evaluated for Impairment	346,743
Loans and Leases Receivable, Gross	350,985
Allowance related to: Loans individually evaluated for impairment	20
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	2,855
Financing Receivable, Allowance for Credit Loss	2,875	1,221	1,705
Commercial real estate owner occupied professional & medical [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for impairment	2,197
Financing Receivable, Collectively Evaluated for Impairment	92,438
Loans and Leases Receivable, Gross	94,635
Allowance related to: Loans individually evaluated for impairment	230
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	642
Financing Receivable, Allowance for Credit Loss	872	1,058
Commercial real estate owner occupied retail [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for impairment	16,220
Financing Receivable, Collectively Evaluated for Impairment	84,706
Loans and Leases Receivable, Gross	100,926
Allowance related to: Loans individually evaluated for impairment	2,142
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,006
Financing Receivable, Allowance for Credit Loss	3,148	820
Commercial real estate owner occupied other [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for impairment	0
Financing Receivable, Collectively Evaluated for Impairment	116,941
Loans and Leases Receivable, Gross	116,941
Allowance related to: Loans individually evaluated for impairment	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	678
Financing Receivable, Allowance for Credit Loss	678	821
Commercial real estate non-owner occupied hotels & motels [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for impairment	0
Financing Receivable, Collectively Evaluated for Impairment	120,324
Loans and Leases Receivable, Gross	120,324
Allowance related to: Loans individually evaluated for impairment	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	2,132
Financing Receivable, Allowance for Credit Loss	2,132	1,235
Commercial real estate non-owner occupied mini-storage [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for impairment	0
Financing Receivable, Collectively Evaluated for Impairment	57,601
Loans and Leases Receivable, Gross	57,601
Allowance related to: Loans individually evaluated for impairment	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	232
Financing Receivable, Allowance for Credit Loss	232	485
Multifamily [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for impairment	0
Financing Receivable, Collectively Evaluated for Impairment	152,561
Loans and Leases Receivable, Gross	152,561
Allowance related to: Loans individually evaluated for impairment	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	680
Financing Receivable, Allowance for Credit Loss	680	1,534
Commercial real estate non-owner occupied retail [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for impairment	2,507
Financing Receivable, Collectively Evaluated for Impairment	105,819
Loans and Leases Receivable, Gross	108,326
Allowance related to: Loans individually evaluated for impairment	57
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,248
Financing Receivable, Allowance for Credit Loss	1,305	964
Commercial real estate non-owner occupied other [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for impairment	5,229
Financing Receivable, Collectively Evaluated for Impairment	174,583
Loans and Leases Receivable, Gross	179,812
Allowance related to: Loans individually evaluated for impairment	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	927
Financing Receivable, Allowance for Credit Loss	927	1,721
Land and Land Improvements [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for impairment	1,621
Financing Receivable, Collectively Evaluated for Impairment	95,722
Loans and Leases Receivable, Gross	97,343
Allowance related to: Loans individually evaluated for impairment	640
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	3,576
Financing Receivable, Allowance for Credit Loss	4,216	600	339
Construction [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for impairment	0
Financing Receivable, Collectively Evaluated for Impairment	66,878
Loans and Leases Receivable, Gross	66,878
Allowance related to: Loans individually evaluated for impairment	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	3,388
Financing Receivable, Allowance for Credit Loss	3,388	242	64
Residential 1-4 family real estate personal residence [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for impairment	0
Financing Receivable, Collectively Evaluated for Impairment	263,315
Loans and Leases Receivable, Gross	263,315
Allowance related to: Loans individually evaluated for impairment	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	2,672
Financing Receivable, Allowance for Credit Loss	2,672	1,275
Residential 1-4 family real estate rental - small loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for impairment	726
Financing Receivable, Collectively Evaluated for Impairment	103,968
Loans and Leases Receivable, Gross	104,694
Allowance related to: Loans individually evaluated for impairment	44
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	2,228
Financing Receivable, Allowance for Credit Loss	2,272	532
Residential 1-4 family real estate rental - large loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for impairment	4,445
Financing Receivable, Collectively Evaluated for Impairment	69,391
Loans and Leases Receivable, Gross	73,836
Allowance related to: Loans individually evaluated for impairment	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	2,616
Financing Receivable, Allowance for Credit Loss	2,616	49
Home Equity [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for impairment	523
Financing Receivable, Collectively Evaluated for Impairment	82,468
Loans and Leases Receivable, Gross	82,991
Allowance related to: Loans individually evaluated for impairment	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	961
Financing Receivable, Allowance for Credit Loss	961	138	167
Consumer [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for impairment	0
Financing Receivable, Collectively Evaluated for Impairment	34,655
Loans and Leases Receivable, Gross	34,655
Allowance related to: Loans individually evaluated for impairment	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	224
Financing Receivable, Allowance for Credit Loss	224	379	79
Credit Card Receivable [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for impairment	0
Financing Receivable, Collectively Evaluated for Impairment	1,637
Loans and Leases Receivable, Gross	1,637
Allowance related to: Loans individually evaluated for impairment	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	16
Financing Receivable, Allowance for Credit Loss	16	0
Bank Overdrafts [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for impairment	0
Financing Receivable, Collectively Evaluated for Impairment	614
Loans and Leases Receivable, Gross	614
Allowance related to: Loans individually evaluated for impairment	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	140
Financing Receivable, Allowance for Credit Loss	140	0
Mortgage Warehouse Lines [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans individually evaluated for impairment	0
Financing Receivable, Collectively Evaluated for Impairment	243,730
Loans and Leases Receivable, Gross	243,730
Allowance related to: Loans individually evaluated for impairment	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	0
Financing Receivable, Allowance for Credit Loss	$ 0	$ 0	$ 0