Loans (Summary Of Impaired Loans) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Impaired [Line Items]
Impaired Loans, With No Allowance, Recorded Investment	$ 20,813	$ 22,387
Impaired Loans, With No Allowance, Unpaid Principal	21,494	23,067
Impaired Loans, With A Related Allowance, Recorded Investment	0	1,060
Impaired Loans, With A Related Allowance, Unpaid Principal	0	1,060
Impaired Loans, With A Related Allowance, Related Allowance	0	243
Impaired Loans, Total, Recorded Investment	20,813	23,447
Impaired Loans, Total, Unpaid Principal	21,494	24,127
Total Commercial Related Loans [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans, With No Allowance, Recorded Investment	19,848	21,453
Impaired Loans, With No Allowance, Unpaid Principal	20,499	22,104
Impaired Loans, With A Related Allowance, Recorded Investment	0	1,060
Impaired Loans, With A Related Allowance, Unpaid Principal	0	1,060
Impaired Loans, With A Related Allowance, Related Allowance	0	243
Impaired Loans, Total, Recorded Investment	19,848	22,513
Impaired Loans, Total, Unpaid Principal	20,499	23,164
Total Commercial Related Loans [Member] | Builder & Developer [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans, With No Allowance, Recorded Investment	2,298	2,673
Impaired Loans, With No Allowance, Unpaid Principal	2,634	3,008
Impaired Loans, With A Related Allowance, Recorded Investment	0	0
Impaired Loans, With A Related Allowance, Unpaid Principal	0	0
Impaired Loans, With A Related Allowance, Related Allowance	0	0
Impaired Loans, Total, Recorded Investment	2,298	2,673
Impaired Loans, Total, Unpaid Principal	2,634	3,008
Total Commercial Related Loans [Member] | Commercial Real Estate Investor [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans, With No Allowance, Recorded Investment	4,520	4,585
Impaired Loans, With No Allowance, Unpaid Principal	4,535	4,601
Impaired Loans, With A Related Allowance, Recorded Investment	0	1,060
Impaired Loans, With A Related Allowance, Unpaid Principal	0	1,060
Impaired Loans, With A Related Allowance, Related Allowance	0	243
Impaired Loans, Total, Recorded Investment	4,520	5,645
Impaired Loans, Total, Unpaid Principal	4,535	5,661
Total Commercial Related Loans [Member] | Residential Real Estate Investor [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans, With No Allowance, Recorded Investment	1,524	1,210
Impaired Loans, With No Allowance, Unpaid Principal	1,824	1,510
Impaired Loans, With A Related Allowance, Recorded Investment	0	0
Impaired Loans, With A Related Allowance, Unpaid Principal	0	0
Impaired Loans, With A Related Allowance, Related Allowance	0	0
Impaired Loans, Total, Recorded Investment	1,524	1,210
Impaired Loans, Total, Unpaid Principal	1,824	1,510
Total Commercial Related Loans [Member] | Hotel/Motel [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans, With No Allowance, Recorded Investment	0	0
Impaired Loans, With No Allowance, Unpaid Principal	0	0
Impaired Loans, With A Related Allowance, Recorded Investment	0	0
Impaired Loans, With A Related Allowance, Unpaid Principal	0	0
Impaired Loans, With A Related Allowance, Related Allowance	0	0
Impaired Loans, Total, Recorded Investment	0	0
Impaired Loans, Total, Unpaid Principal	0	0
Total Commercial Related Loans [Member] | Wholesale & Retail [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans, With No Allowance, Recorded Investment	6,273	7,912
Impaired Loans, With No Allowance, Unpaid Principal	6,273	7,912
Impaired Loans, With A Related Allowance, Recorded Investment	0	0
Impaired Loans, With A Related Allowance, Unpaid Principal	0	0
Impaired Loans, With A Related Allowance, Related Allowance	0	0
Impaired Loans, Total, Recorded Investment	6,273	7,912
Impaired Loans, Total, Unpaid Principal	6,273	7,912
Total Commercial Related Loans [Member] | Manufacturing [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans, With No Allowance, Recorded Investment	3,664	3,840
Impaired Loans, With No Allowance, Unpaid Principal	3,664	3,840
Impaired Loans, With A Related Allowance, Recorded Investment	0	0
Impaired Loans, With A Related Allowance, Unpaid Principal	0	0
Impaired Loans, With A Related Allowance, Related Allowance	0	0
Impaired Loans, Total, Recorded Investment	3,664	3,840
Impaired Loans, Total, Unpaid Principal	3,664	3,840
Total Commercial Related Loans [Member] | Agriculture [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans, With No Allowance, Recorded Investment	440	315
Impaired Loans, With No Allowance, Unpaid Principal	440	315
Impaired Loans, With A Related Allowance, Recorded Investment	0	0
Impaired Loans, With A Related Allowance, Unpaid Principal	0	0
Impaired Loans, With A Related Allowance, Related Allowance	0	0
Impaired Loans, Total, Recorded Investment	440	315
Impaired Loans, Total, Unpaid Principal	440	315
Total Commercial Related Loans [Member] | Other [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans, With No Allowance, Recorded Investment	1,129	918
Impaired Loans, With No Allowance, Unpaid Principal	1,129	918
Impaired Loans, With A Related Allowance, Recorded Investment	0	0
Impaired Loans, With A Related Allowance, Unpaid Principal	0	0
Impaired Loans, With A Related Allowance, Related Allowance	0	0
Impaired Loans, Total, Recorded Investment	1,129	918
Impaired Loans, Total, Unpaid Principal	1,129	918
Total Consumer Related Loans [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans, With No Allowance, Recorded Investment	965	934
Impaired Loans, With No Allowance, Unpaid Principal	995	963
Impaired Loans, With A Related Allowance, Recorded Investment	0	0
Impaired Loans, With A Related Allowance, Unpaid Principal	0	0
Impaired Loans, With A Related Allowance, Related Allowance	0	0
Impaired Loans, Total, Recorded Investment	965	934
Impaired Loans, Total, Unpaid Principal	995	963
Total Consumer Related Loans [Member] | Residential Mortgages [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans, With No Allowance, Recorded Investment	275	247
Impaired Loans, With No Allowance, Unpaid Principal	305	276
Impaired Loans, With A Related Allowance, Recorded Investment	0	0
Impaired Loans, With A Related Allowance, Unpaid Principal	0	0
Impaired Loans, With A Related Allowance, Related Allowance	0	0
Impaired Loans, Total, Recorded Investment	275	247
Impaired Loans, Total, Unpaid Principal	305	276
Total Consumer Related Loans [Member] | Home Equity [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans, With No Allowance, Recorded Investment	457	452
Impaired Loans, With No Allowance, Unpaid Principal	457	452
Impaired Loans, With A Related Allowance, Recorded Investment	0	0
Impaired Loans, With A Related Allowance, Unpaid Principal	0	0
Impaired Loans, With A Related Allowance, Related Allowance	0	0
Impaired Loans, Total, Recorded Investment	457	452
Impaired Loans, Total, Unpaid Principal	457	452
Total Consumer Related Loans [Member] | Other [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans, With No Allowance, Recorded Investment	233	235
Impaired Loans, With No Allowance, Unpaid Principal	233	235
Impaired Loans, With A Related Allowance, Recorded Investment	0	0
Impaired Loans, With A Related Allowance, Unpaid Principal	0	0
Impaired Loans, With A Related Allowance, Related Allowance	0	0
Impaired Loans, Total, Recorded Investment	233	235
Impaired Loans, Total, Unpaid Principal	$ 233	$ 235