10. Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Expected tax (credit)	$ (338)	$ (155)
State income taxes, net of federal tax benefits	(65)	(29)
Decrease in environmental liability	0	0
Increase (decrease) in valuation allowance	403	184
Income Tax Expense Benefit Continuing Operations	$ 0	$ 0
Expected tax (credit), Percentage	(21.00%)	(21.00%)
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%	25.00%
Effective Income Tax Rate Continuing Operations	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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