10. Income Taxes (Details 1) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax asset:
Net operating loss carryover	$ 17,522	$ 17,119
Expenses capitalized under IRC 263(a)	37	37
Tax credits (AMT)	57	57
Valuation allowance	(17,616)	(17,213)
Total tax asset	$ 0	$ 0