Income Taxes (Tax Effect of Significant Temporary Differences) (Details) - CTRS - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Income Taxes [Line Items]
Income from unconsolidated joint ventures	$ 27	$ 18
Federal and state tax carryforwards	702	763
Other	99	2
Total deferred tax assets	828	783
Valuation allowance	(828)	(783)
Net deferred tax asset	$ 0	$ 0

Deferred tax assets operating loss carryforwards federal and state.

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[Line Items] for Income Taxes [Table]

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from equity method investments.

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

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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, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other.

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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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