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Inventories (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Inventories [Abstract]
Natural gas	$ 763	$ 1,052
Renewable credits	12,504	14,940
Solar Panels:
Finished goods	1,219	424
Raw materials	216	216
Total solar panels inventory	1,435	640
Totals	$ 14,702	$ 16,632

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Carrying amount as of the balance sheet date of liquid hydrocarbon components recovered from natural gas.

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Amount before valuation reserves of merchandise or goods held by the entity that are readily available for sale and items held by the entity which are partially complete or in the process of being readied for sale.

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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Gross amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed.

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