10. Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Income Taxes Details Abstract
Expected tax (credit)	$ (155)	$ (513)
State income taxes, net of federal tax benefits	(29)	(60)
Decrease in environmental liability	0	7
Increase (decrease in valuation allowance)	184	623
Income Tax Expense Benefit Continuing Operations	$ 0	$ 57
Expected tax (credit), Percentage	(21.00%)	(34.00%)
State income taxes, net of federal tax benefits, Percentage	(4.00%)	(4.00%)
Decrease in environmental liability, Percentage	0.00%	0.00%
Increase (decrease in valuation allowance) Percentage	25.00%	41.00%
Effective Income Tax Rate Continuing Operations	0.00%	3.00%

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

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