SUMMARY OF ACCOUNTING POLICIES (Details - Investment in Joint Ventures) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Accounting Policies [Abstract]
Beginning balance			$ 37,973
Equity in earnings in these joint ventures	$ 1,955	$ 2,822	6,072	$ 9,547
Distribution of earnings			(3,924)	$ (21,783)
Sale of ownership interest			(134)
Dissolution of GRSN			(1,427)
Nulogix change in control			(1,795)
Equity contributions in existing joint ventures			103
Ending balance	$ 36,868		$ 36,868

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Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures, Return of Capital

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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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