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Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Income Taxes [Abstract]
Income tax (benefit) expense	$ 0	$ 0	$ (393)	$ 5
Valuation allowance carried against net deferred tax assets	37,000		37,000		$ 36,000
Federal [Member]
Income Taxes [Abstract]
Net operating loss carryforwards	127,000		$ 127,000
Federal [Member] | Earliest Tax Year [Member]
Income Taxes [Abstract]
Operating loss carryforwards, expiration dates			Dec. 31, 2027
State [Member]
Income Taxes [Abstract]
Net operating loss carryforwards	$ 108,000		$ 108,000
State [Member] | Earliest Tax Year [Member]
Income Taxes [Abstract]
Operating loss carryforwards, expiration dates			Dec. 31, 2028

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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