Loans And Leases (Individually Evaluated For Impairment By Class Of Loans) (Details) - USD ($) $ in Thousands		3 Months Ended			9 Months Ended			12 Months Ended
		Sep. 30, 2018		Sep. 30, 2017	Sep. 30, 2018		Sep. 30, 2017	Dec. 31, 2017
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance		$ 382			$ 382			$ 391
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance		3,223			3,223			3,439
Impaired Financing Receivable, Unpaid Principal Balance, Total		3,605			3,605			3,830
Impaired Financing Receivable, with No Related Allowance, Recorded Investment		128			128			137
Impaired Financing Receivable, with Related Allowance, Recorded Investment		3,223			3,223			3,439
Impaired Financing Receivable, Recorded Investment, Total		3,351			3,351			3,576
Impaired Financing Receivable, ALL Allocated		24			24			26
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		129		$ 140	132		$ 144
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment		3,296		4,450	3,342		4,598
Impaired Financing Receivable, Average Recorded Investment, Total		3,425		4,590	3,474		4,742
Impaired Financing Receivable, with no Related Allowance, Interest Income Recognized		5		6	16		20
Impaired Financing Receivable, with Related Allowance, Interest Income Recognized		46		52	139		148
Impaired Financing Receivable, Interest Income Recognized, Total		51		58	155		168
Impaired Financing Receivable Allocated Loans and Leases		24			24			26
Impaired financing receivable, rounding threshold					1			1
Single-Family Residential [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance		112	[1]		112	[1]		116
Impaired Financing Receivable, with Related Allowance, Recorded Investment		112	[1]		112	[1]		116
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment		112	[1]	118	114	[1]	119
Impaired Financing Receivable, with Related Allowance, Interest Income Recognized		2	[1]	2	5	[1]	5
Multi-Family Residential [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	[1]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[1]
Impaired Financing Receivable, ALL Allocated	[1]
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment			[1]	32		[1]	34
Impaired Financing Receivable, with Related Allowance, Interest Income Recognized			[1]	1		[1]	2
Non-Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance		2,826			2,826			2,856
Impaired Financing Receivable, with Related Allowance, Recorded Investment		2,826			2,826			2,856
Impaired Financing Receivable, ALL Allocated		23			23			24
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment		2,832		2,989	2,841		3,001
Impaired Financing Receivable, with Related Allowance, Interest Income Recognized		39		42	117		120
Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance		382			382			391
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance		84			84			190
Impaired Financing Receivable, with No Related Allowance, Recorded Investment		128			128			137
Impaired Financing Receivable, with Related Allowance, Recorded Investment		84			84			190
Impaired Financing Receivable, ALL Allocated		1			1			2
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		129		140	132		144
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment		150		972	175		1,098
Impaired Financing Receivable, with no Related Allowance, Interest Income Recognized		5		6	16		20
Impaired Financing Receivable, with Related Allowance, Interest Income Recognized		2		5	6		14
Commercial [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance		201	[1]		201	[1]		277
Impaired Financing Receivable, with Related Allowance, Recorded Investment		201	[1]		201	[1]		$ 277
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment		202	[1]	339	212	[1]	346
Impaired Financing Receivable, with Related Allowance, Interest Income Recognized		$ 3	[1]	$ 2	$ 11	[1]	$ 7

[1] Allowance recorded is less than $1 resulting in rounding to zero.