SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details - Investment in Joint Ventures) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures [Roll Forward]
Beginning balance	$ 34,528	$ 34,470
Equity contributions in existing and purchase of interest in joint ventures	1,441	1,635
Equity in earnings in these joint ventures	10,967	7,945	$ 8,350
Distribution of earnings	(4,707)	(9,522)
Ending balance	$ 42,229	$ 34,528	$ 34,470

Equity contributions in existing joint ventures

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Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures

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Amount of distribution received from equity method investee for return on investment, classified as operating activities. Excludes distribution for return of investment, classified as investing activities.

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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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Amount of investment in equity method investee and investment in and advance to affiliate.

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