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Manufactured Methane Facilities (Methane Facilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Manufactured Methane facilities, net of impairment	$ 401	$ 422
Accumulated depreciation	(266)	(282)
Manufactured Methane facilities, net	135	140
Methane Project [Member]
Property, Plant and Equipment [Line Items]
Manufactured Methane facilities, net of impairment	1,681	1,681
Accumulated depreciation	(184)	(122)
Manufactured Methane facilities, net	$ 1,497	$ 1,559

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-SubTopic 10
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