Stock-based Compensation (Details - Option Activity) - Equity Option [Member] $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) $ / shares shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Options outstanding, beginning balance | shares	41
Weighted average exercise price, options outstanding, beginning balance | $ / shares	$ 10.42
Weighted average remaining contractural life, outstanding	5 years 2 months 19 days
Aggregate intrinsic value, options outstanding | $	$ 0
Options granted | shares	0
Weighted average exercise price, options granted | $ / shares	$ 0
Options exercised | shares	0
Weighted average exercise price, options exercised | $ / shares	$ 0
Options forfeited | shares	0
Weighted average exercise price, options forfeited | $ / shares	$ 0
Options outstanding, ending balance | shares	41
Weighted average exercise price, options outstanding, ending balance | $ / shares	$ 10.42
Weighted average remaining contractural life, outstanding ending	4 years 2 months 19 days
Aggregate intrinsic value, options outstanding | $	$ 0
Exercisable | shares	41
Weighted average exercise price, Exercisable | $ / shares	$ 10.42
Weighted average remaining contractural life, exercisable	4 years 2 months 19 days
Aggregate intrinsic value, options exercisable | $	$ 0