Income Taxes (Schedule Of Income Tax Provision (Benefit)) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Current:
Federal	$ (19,000)	$ 382,000	$ (93,000)	$ 774,000
State	11,000		(10,000)
Deferred:
Federal	13,000	8,000	30,000	146,000
State	1,000		2,000
Income Tax Provision (Benefit)	$ 6,000	$ 390,000	$ (71,000)	$ 920,000