Income Taxes (Statutory Federal Income Tax Rate) (Details) - CTRS - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Amount
Federal income tax benefit (expense)	$ 143	$ 47	$ (1,159)
State income tax benefit (expense), net of federal income tax effect	27	5	(132)
Change in deferred tax assets as a result of change in tax law	0	(340)	0
Valuation allowance	(174)	283	1,282
Other	4	5	9
Benefit applicable to income (loss) from continuing operations	$ 0	$ 0	$ 0
Rate
Federal income tax benefit (expense) (percent)	21.00%	35.00%	35.00%
State income tax benefit (expense), net of federal income tax effect (percent)	4.00%	4.00%	4.00%
Change in deferred tax assets as a result of change in tax law (percent)	0.00%	(254.00%)	0.00%
Valuation allowance (percent)	(26.00%)	211.00%	(39.00%)
Other (percent)	1.00%	4.00%	0.00%
Benefit applicable to income (loss) from continuing operations (percent)	0.00%	0.00%	0.00%

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

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