Income Taxes (Schedule Of Reconciliation Of Federal Income Tax Rate) (Details)	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Income Tax [Line Items]
U.S. statutory income tax rate	34.00%	34.00%
State and local taxes, net of federal tax benefit	1.80%	1.00%
Permanent differences between book and tax	(1.50%)	(15.90%)
Deferred tax adjustments	(6.10%)	(5.90%)
Valuation allowance	220.70%	(20.60%)
Effective income tax rate
Federal [Member]
Income Tax [Line Items]
Rate adjustments	(244.90%)	0.00%
State [Member]
Income Tax [Line Items]
Rate adjustments	(4.00%)	7.40%

Income Tax [Line Items]

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 13
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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Topic 740
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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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