Accumulated Other Comprehensive Income (Loss) (Schedule Of Accumulated Other Comprehensive Income) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), beginning of period	$ (170,000)
Other comprehensive loss, net of tax	(1,050,000)	$ (29,000)
Accumulated other comprehensive income, end of period	(1,220,000)
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	(170,000)	96,000
Other comprehensive income (loss) before reclassifications	(1,050,000)	(29,000)
Other comprehensive loss, net of tax	(1,050,000)	(29,000)
Accumulated other comprehensive income, end of period	(1,220,000)	67,000
Amount reclassified out of other comprehensive income	$ 0	$ 0