(1) Summary of Significant Accounting Policies (Details - Earning per share) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accounting Policies [Abstract]
Numerator for basic and diluted earnings per share	$ 85,983	$ 47,524	$ 21,677
Denominator for basic earnings per share - weighted average number of common shares outstanding during the year	20,958	22,562	22,611
Incremental common shares attributable to exercise of outstanding options and warrants	5,631	3,218	1,392
Denominator for diluted earnings per share	26,589	25,780	24,003
Basic earnings per share	$ 4.10	$ 2.11	$ 0.96
Diluted earnings per share	$ 3.23	$ 1.84	$ 0.90