11. Stock-based and Other Compensation (Details - Option Activity) - Options [Member] $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($) $ / shares shares
Options outstanding, beginning balance	41
Options granted	0
Options exercised	0
Options forfeited	0
Options outstanding, ending balance	41
Options exercisable	39
Weighted average exercise price, options outstanding, beginning balance | $ / shares	$ 10.42
Weighted average exercise price, options outstanding, ending balance | $ / shares	10.42
Weighted average exercise price, options exercisable | $ / shares	$ 10.46
Weighted average remaining contractural life, outstanding, beginning balance	7 years 2 months 19 days
Weighted average remaining contractural life, outstanding, ending balance	6 years 11 months 19 days
Weighted average remaining contractural life, exercisable	6 years 11 months 16 days
Aggregate intrinsic value, options outstanding | $	$ 0
Aggregate intrinsic value, options exercisable | $	$ 0