Accumulated Other Comprehensive Income (Schedule Of Accumulated Other Comprehensive Income) (Details) - USD ($)		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), beginning of period				$ 28,000
Other comprehensive income (loss), net of tax		$ (24,000)	$ 10,000	94,000	$ 97,000
Accumulated other comprehensive income, end of period		122,000		122,000
Unrealized Gains and Losses on Available-for-Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), beginning of period	[1]	146,000	14,000	28,000	(73,000)
Other comprehensive income (loss) before reclassifications	[1],[2]	(24,000)	10,000	94,000	97,000
Other comprehensive income (loss), net of tax	[1]	(24,000)	10,000	94,000	97,000
Accumulated other comprehensive income, end of period	[1]	122,000	24,000	122,000	24,000
Less amount reclassified from accumulated other comprehensive loss		$ 0	$ 0	$ 0	$ 0

[1] All amounts are net of tax. Amounts in parentheses indicate a reduction of other comprehensive income.

[2] There were no amounts reclassified out of other comprehensive income for the three and nine months ended September 30, 2020 and 2019.