15. Income Taxes (Details Narrative) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Valuation allowance for deferred tax assets	$ 13,087	$ 11,875
Net change in our valuation allowance	1,212	$ 2,036
Research and development
Operating loss carryforwards	$ 21,936
Operating loss carryforwards, exiration date	2019 through 2020
Foreign tax credit carry-forwards
Operating loss carryforwards	$ 129
Operating loss carryforwards, exiration date	expire in 2017
U.S. federal income tax reporting
Operating loss carryforwards	$ 892
Operating loss carryforwards, exiration date	2020 through 2035