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11. Stock-based and Other Compensation (Details - Option Activity) - Options [Member]
$ / shares in Units, shares in Thousands, $ in Thousands
 9 Months Ended
Sep. 30, 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 41
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 $ 10.42
Weighted average remaining contractural life, outstanding, beginning balance 7 years 2 months 19 days
Weighted average remaining contractural life, outstanding, ending balance 6 years 5 months 20 days
Weighted average remaining contractural life, exercisable 6 years 5 months 20 days
Aggregate intrinsic value, options outstanding | $ $ 0
Aggregate intrinsic value, options exercisable | $ $ 0