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SUMMARY OF ACCOUNTING POLICIES (Details - Investment in Joint Ventures) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Accounting Policies [Abstract] |  |  |  |
Beginning balance |  |  | $ 34,470 |
Equity in earnings in these joint ventures | $ 945 | $ 2,244 | 2,900 | $ 4,117
Ending balance | $ 37,370 |  | $ 37,370 |

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