Fair Value Of Financial Instruments (Narrative) (Details)	12 Months Ended
	Dec. 31, 2018 USD ($) loan	Dec. 31, 2017 USD ($) loan	Dec. 31, 2016 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value, Transfers between levels	$ 0	$ 0
Provisions (credits) for loan losses	$ 0	(482,000)	$ 449,000
Valuation allowance for other real estate owned		(725,000)
Other real estate owned		$ 5,850,000
Number of impaired loans | loan	0	0
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	$ 0
Fair Value, Measurements, Nonrecurring [Member] | Commercial Mortgages [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Valuation allowance for other real estate owned		$ 725,000