10. Income Taxes (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Deferred tax asset:
Net operating loss carryforward	$ 24,647	$ 23,127
Adjustments to reduce land to net realizable value	12	12
Expenses capitalized under IRC 263(a)	56	56
Environmental liability	24	24
Valuation allowance	(24,567)	(23,047)
Total tax asset	172	172
Deferred tax liability:
Basis difference of land and improvement inventories	172	172
Net deferred tax asset	$ 0	$ 0