Allowance For Loan Losses (Schedule Of Allowance For Loan Loss By Portfolio Segment) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Allowance for Loan Losses [Roll Forward]
Beginning balance				$ 11,589				$ 15,966	$ 11,589	$ 15,966	$ 18,836
Charge-offs									(6,163)	(6,654)	(5,473)
Recoveries									2,641	3,527	4,913
Financing Receivable, Credit Loss, Expense (Reversal)	$ 474	$ 1,026	$ 1,250	7,972	$ (75)	$ 274	$ (600)	(849)	10,722	(1,250)	(2,310)
Ending balance	24,549				11,589				24,549	11,589	15,966
Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan Losses [Roll Forward]
Beginning balance				5,760					5,760
Ending balance					5,760					5,760
Commercial Loan [Member]
Allowance for Loan Losses [Roll Forward]
Beginning balance				2,059				4,060	2,059	4,060	4,571
Charge-offs									(843)	(261)	(733)
Recoveries									91	764	2,152
Financing Receivable, Credit Loss, Expense (Reversal)									622	(2,504)	(1,930)
Ending balance	3,644				2,059				3,644	2,059	4,060
Commercial Loan [Member] | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan Losses [Roll Forward]
Beginning balance				1,715					1,715
Ending balance					1,715					1,715
Commercial Real Estate [Member]
Allowance for Loan Losses [Roll Forward]
Beginning balance				2,606				4,495	2,606	4,495	6,183
Charge-offs									(1,113)	(1,358)	(369)
Recoveries									525	624	732
Financing Receivable, Credit Loss, Expense (Reversal)									5,725	(1,155)	(2,051)
Ending balance	10,997				2,606				10,997	2,606	4,495
Commercial Real Estate [Member] | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan Losses [Roll Forward]
Beginning balance				3,254					3,254
Ending balance					3,254					3,254
Residential Real Estate [Member]
Allowance for Loan Losses [Roll Forward]
Beginning balance				3,448				4,116	3,448	4,116	5,212
Charge-offs									(1,250)	(787)	(682)
Recoveries									184	369	367
Financing Receivable, Credit Loss, Expense (Reversal)									3,572	(250)	(781)
Ending balance	8,093				3,448				8,093	3,448	4,116
Residential Real Estate [Member] | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan Losses [Roll Forward]
Beginning balance				2,139					2,139
Ending balance					2,139					2,139
Home Equity Line of Credit [Member]
Allowance for Loan Losses [Roll Forward]
Beginning balance				1,187				1,268	1,187	1,268	1,138
Charge-offs									(420)	(294)	(219)
Recoveries									136	0	0
Financing Receivable, Credit Loss, Expense (Reversal)									325	213	349
Ending balance	630				1,187				630	1,187	1,268
Home Equity Line of Credit [Member] | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan Losses [Roll Forward]
Beginning balance				(598)					(598)
Ending balance					(598)					(598)
Consumer Loan
Allowance for Loan Losses [Roll Forward]
Beginning balance				975				319	975	319	62
Charge-offs									(192)	(1,177)	(769)
Recoveries									238	265	166
Financing Receivable, Credit Loss, Expense (Reversal)									(48)	1,568	860
Ending balance	163				975				163	975	319
Consumer Loan | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan Losses [Roll Forward]
Beginning balance				(810)					(810)
Ending balance					(810)					(810)
DDA Overdrafts
Allowance for Loan Losses [Roll Forward]
Beginning balance				1,314				$ 1,708	1,314	1,708	1,670
Charge-offs									(2,345)	(2,777)	(2,701)
Recoveries									1,467	1,505	1,496
Financing Receivable, Credit Loss, Expense (Reversal)									526	878	1,243
Ending balance	$ 1,022				1,314				1,022	1,314	$ 1,708
DDA Overdrafts | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan Losses [Roll Forward]
Beginning balance				$ 60					$ 60
Ending balance					$ 60					$ 60