Property, Plant and Equipment - Schedule of Property Plant and Equipment (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Cost	$ 99,667	$ 90,422
Less: accumulated depreciation	(42,628)	(38,384)
Property, plant and equipment, net	57,039	52,038
Liquefaction plants and systems
Property, Plant and Equipment [Line Items]
Cost	47,118	40,841
Real property and buildings
Property, Plant and Equipment [Line Items]
Cost	2,392	1,649
Vehicles and tanker trailers and equipment
Property, Plant and Equipment [Line Items]
Cost	49,358	47,179
Computer and office equipment
Property, Plant and Equipment [Line Items]
Cost	577	532
Construction in progress
Property, Plant and Equipment [Line Items]
Cost	191	191
Leasehold improvements
Property, Plant and Equipment [Line Items]
Cost	$ 31	$ 30

Amount, before accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(13))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant