Income Taxes (Schedule Of Provision For Income Taxes) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Income Taxes [Abstract]
Federal	$ 13,308,196	$ (757,955)
State and local	(263,860)	(328,867)
Total deferred income tax expense (benefit)	13,044,336	(1,086,822)
Valuation allowance	(13,044,336)	1,086,822
Income tax benefit