8. Project Assets (Details Narrative) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues	$ 97,883	$ 125,582	$ 121,520
Cost of revenue	90,693	114,525	111,428
PV project assets and pre-development solar projects [Member]
Revenues	6,728	26,603	6,042
Cost of revenue	7,703	23,418	6,229
Certain project assets [Member]
Project impairment loss	$ 2,455	$ 0	$ 687

The aggregate cost of goods produced and sold and services rendered during the reporting period.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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