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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details - Investment in Joint Ventures) - USD ($) $ in Thousands | 12 Months Ended
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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

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