Income Taxes (Schedule Of Income Tax Provision (Benefit)) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Current:
Federal	$ (53,000)	$ 392,000	$ (74,000)	$ 392,000
State	(15,000)		(21,000)
Deferred:
Federal	8,500	10,000	17,000	138,000
State	500		1,000
Income Tax Provision (Benefit)	$ (59,000)	$ 402,000	$ (77,000)	$ 530,000