Income Taxes (Net Deferred Income Tax Asset) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Net operating loss carryforward	$ 3,899	$ 3,899
Valuation allowance	(3,899)	(3,858)
Total deferred tax assets	0	41
Deferred tax liabilities:
Built-in gain	0	(41)
Total deferred tax liabilities	0	(41)
Net deferred tax asset	$ 0	$ 0

Deferred Tax Liabilities, Built-in Gain

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Amount of deferred tax liability attributable to taxable temporary differences.

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Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

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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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