Income Taxes (Reconcilement Of Tax Rates) (Details)	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Taxes [Abstract]
U.S. federal statutory tax rate	(21.00%)	(35.00%)	(35.00%)
Valuation allowance	28.00%	23.00%	42.00%
Tax reform	(2.00%)	18.00%
Permanent differences	2.00%	1.00%	2.00%
State tax benefit and other	(7.00%)	(7.00%)	(9.00%)

Effective Income Tax Rate Reconciliation, Tax Cuts and Jobs Act of 2017, Percent

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- Definition

Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 1
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- Definition

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.

+ References

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-Publisher FASB
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-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 6.I)
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- Definition

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).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 13
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-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 6.I)
-URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817

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