Fair Value (Financial Instruments Measured At Fair Value On A Non-Recurring Basis) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
Sep. 30, 2017	Dec. 31, 2016
Commercial [Member]
Impaired loans:
Impaired loans at Fair Value	$ 119	$ 130
Impaired loans:
Valuation Technique(s)	Comparable sales approach
Commercial [Member] \| Weighted Average [Member]
Impaired loans:
Fair Value Inputs, Adjustment for differences between the comparable market transactions	3.48%	3.48%
Single-Family Residential [Member]
Impaired loans:
Impaired loans at Fair Value	$ 117	$ 122
Impaired loans:
Valuation Technique(s)	Comparable sales approach
Single-Family Residential [Member] \| Minimum [Member]
Impaired loans:
Fair Value Inputs, Adjustment for differences between the comparable market transactions	1.81%	1.81%
Single-Family Residential [Member] \| Maximum [Member]
Impaired loans:
Fair Value Inputs, Adjustment for differences between the comparable market transactions	3.61%	3.61%
Single-Family Residential [Member] \| Weighted Average [Member]
Impaired loans:
Fair Value Inputs, Adjustment for differences between the comparable market transactions	2.91%	2.91%
Multi-Family Residential [Member]
Impaired loans:
Impaired loans at Fair Value	$ 31	$ 37
Impaired loans:
Valuation Technique(s)	Comparable sales approach
Multi-Family Residential [Member] \| Weighted Average [Member]
Impaired loans:
Fair Value Inputs, Adjustment for differences between the comparable market transactions	9.64%	9.64%
Non-Owner Occupied [Member]
Impaired loans:
Impaired loans at Fair Value	$ 2,959	$ 2,161
Impaired loans:
Valuation Technique(s)	Comparable sales approach
Non-Owner Occupied [Member] \| Minimum [Member]
Impaired loans:
Fair Value Inputs, Adjustment for differences between the comparable market transactions	3.48%	1.10%
Non-Owner Occupied [Member] \| Maximum [Member]
Impaired loans:
Fair Value Inputs, Adjustment for differences between the comparable market transactions	9.64%	5.74%
Non-Owner Occupied [Member] \| Weighted Average [Member]
Impaired loans:
Fair Value Inputs, Adjustment for differences between the comparable market transactions	5.15%	1.35%
Owner Occupied [Member]
Impaired loans:
Impaired loans at Fair Value	$ 771	$ 200
Impaired loans:
Valuation Technique(s)	Comparable sales approach
Owner Occupied [Member] \| Minimum [Member]
Impaired loans:
Fair Value Inputs, Adjustment for differences between the comparable market transactions	(4.46%)
Owner Occupied [Member] \| Maximum [Member]
Impaired loans:
Fair Value Inputs, Adjustment for differences between the comparable market transactions	(5.26%)
Owner Occupied [Member] \| Weighted Average [Member]
Impaired loans:
Fair Value Inputs, Adjustment for differences between the comparable market transactions	5.09%	(4.46%)