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Leases - Additional Information (Detail) $ in Thousands	1 Months Ended			12 Months Ended
	Jan. 31, 2020 USD ($)	Jan. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2020 USD ($) City	Dec. 31, 2019 USD ($)	Dec. 31, 2018 lease	Dec. 31, 2014
Lessee, Lease, Description [Line Items]
Rent expense				$ 262	$ 298
Number of finance lease agreements | lease						3
Liquefaction plants and systems
Lessee, Lease, Description [Line Items]
Equipment lease, term of contract			1 year			1 year
Monthly payments			$ 13
January 2019 And Thereafter
Lessee, Lease, Description [Line Items]
Sublease income		$ 2
Denver, Colorado
Lessee, Lease, Description [Line Items]
Non-cancelable operating leases term							5 years
Rent expense				$ 67	$ 92
Fort Lupton, Colorado
Lessee, Lease, Description [Line Items]
Equipment lease, term of contract	1 year
Monthly payments	$ 2
Minimum
Lessee, Lease, Description [Line Items]
Remaining operating lease term				1 year
Maximum
Lessee, Lease, Description [Line Items]
Remaining operating lease term				5 years
M&I Brazil
Lessee, Lease, Description [Line Items]
Number of cities in which offices and facilities were leased | City				3

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Lessee, Operating Lease, Monthly Payments

+ References

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Non cancelable operating leases term.

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- Definition

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 4
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-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980

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