11. Income Taxes (Details 1) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred tax asset:
Net operating loss carryover	$ 25,240	$ 26,342
Adjustments to reduce land to net realizable value	0	12
Expenses capitalized under IRC 263(a)	56	56
Environmental liability	7	9
Valuation allowance	(25,303)	(26,247)
Total tax asset	0	172
Deferred tax liability:
Basis difference of land and improvement inventories	0	172
Net deferred tax asset