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1. Summary of Significant Accounting Policies (Details - Earnings Per Share) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accounting Policies [Abstract]
Numerator for basic and diluted earnings per share	$ 5,406	$ 14,862	$ 3,765
Denominator for basic earnings per share - weighted average number of common shares outstanding during the year	22,416	21,989	22,687
Incremental common shares attibutable to exercise of outstanding options and warrants	1,648	2,999	4,527
Denominator for diluted earnings per share	24,064	24,988	27,214
Basic earnings per share	$ 0.24	$ 0.68	$ 0.17
Diluted earnings per share	$ 0.22	$ 0.59	$ 0.14

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