(7) Shareholders' Equity (Details - Option activity) - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Equity [Abstract]
Number of shares options outstanding at the beginning of period	15,977
Weighted average exercise options outstanding at the beginning of period	$ 4.46
Number of shares Granted	1,460
Weighted average exercise granted	$ 4.95
Number of shares Exercised	(2,291)
Weighted average exercise exercised	$ 2.64
Number of shares Forfeited/Expired	(2,071)
Weighted average exercise Forfeited/Expired	$ 6.31
Number of shares options outstanding at the end of period	13,075
Weighted average exercise options outstanding at the end of period	$ 4.54
Weighted average remaining contractual term, end of period	2 years 10 months 6 days
Number of shares options exercisable at the end of period	9,685	12,597
Weighted average exercise options exercisable at the end of period	$ 4.80
Weighted average remaining contractual term, exercisable at the end of period	1 year 10 months 20 days