9. Stock Options (Details - Exercise Price) shares in Thousands	12 Months Ended
	Dec. 31, 2019 $ / shares shares
Options Outstanding | shares	1,035
Options Outstanding, Weighted Aaverage Rremaining Ccontractual Life (Year)	5 years 3 months 29 days
Options Outstanding Weighted Average Exercise Price	$ 2.87
Options Exercisable | shares	601
Options Exercisable Weighted Average Exercise Price	$ 1.03
Range 1 [Member]
Exercise price, low end of range	0.40
Exercise price, high end of range	$ 1.00
Options Outstanding | shares	411
Options Outstanding, Weighted Aaverage Rremaining Ccontractual Life (Year)	1 year 7 months 28 days
Options Outstanding Weighted Average Exercise Price	$ 0.58
Options Exercisable | shares	411
Options Exercisable Weighted Average Exercise Price	$ 0.58
Range 2 [Member]
Exercise price, low end of range	1.01
Exercise price, high end of range	$ 2.00
Options Outstanding | shares	140
Options Outstanding, Weighted Aaverage Rremaining Ccontractual Life (Year)	3 years 9 months 29 days
Options Outstanding Weighted Average Exercise Price	$ 1.69
Options Exercisable | shares	132
Options Exercisable Weighted Average Exercise Price	$ 1.72
Range 3 [Member]
Exercise price, low end of range	2.01
Exercise price, high end of range	$ 4.25
Options Outstanding | shares	71
Options Outstanding, Weighted Aaverage Rremaining Ccontractual Life (Year)	5 years 6 months 14 days
Options Outstanding Weighted Average Exercise Price	$ 2.89
Options Exercisable | shares	55
Options Exercisable Weighted Average Exercise Price	$ 2.5
Range 4 [Member]
Exercise price, low end of range	4.26
Exercise price, high end of range	$ 8.72
Options Outstanding | shares	413
Options Outstanding, Weighted Aaverage Rremaining Ccontractual Life (Year)	9 years 5 months 16 days
Options Outstanding Weighted Average Exercise Price	$ 5.54
Options Exercisable | shares	3
Options Exercisable Weighted Average Exercise Price	$ 4.75