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11. Income Taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Income Taxes Details    
Expected tax (credit) $ 986 $ (2,876)
State income taxes, net of federal tax benefits 116 (338)
Decrease in land inventory basis (160) 0
Decrease in environmental liability 2 15
Increase (decrease in valuation allowance) (944) 3,199
Income Tax Expense Benefit Continuing Operations $ 0 $ 0
Expected tax (credit), Percentage 34.00% (34.00%)
State income taxes, net of federal tax benefits, Percentage 4.00% (4.00%)
Decrease in land inventory basis, Percentage (6.00%) 0.00%
Decrease in environmental liability, Percentage 0.00% 0.00%
Increase (decrease in valuation allowance) Percentage (32.00%) 38.00%
Effective Income Tax Rate Continuing Operations 0.00% 0.00%