(1) Summary of Significant Accounting Policies (Details - Earning per share) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accounting Policies [Abstract]
Numerator for basic and diluted earnings per share	$ 47,524	$ 21,677	$ 5,406
- weighted average number of common shares outstanding during the year	22,562	22,611	22,416
Incremental common shares attributable to exercise of outstanding options and warrants	3,218	1,392	1,648
Denominator for diluted earnings per share	25,780	24,003	24,064
Basic earnings per share	$ 2.11	$ 0.96	$ 0.24
Diluted earnings per share	$ 1.84	$ 0.90	$ 0.22