Note 5 - Property, Plant and Equipment, Net - Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Property, Plant and Equipment	$ 125,613	$ 117,246
Less: accumulated depreciation	(72,666)	(65,518)
Net	52,947	51,728
Liquefaction Plants and Systems [Member]
Property, Plant and Equipment	$ 57,341	56,752
Liquefaction Plants and Systems [Member] \| Minimum [Member]
Property, Plant and Equipment, useful life (Year)	10 years
Liquefaction Plants and Systems [Member] \| Maximum [Member]
Property, Plant and Equipment, useful life (Year)	15 years
Real Property and Buildings [Member]
Property, Plant and Equipment	$ 2,082	2,082
Real Property and Buildings [Member] \| Minimum [Member]
Property, Plant and Equipment, useful life (Year)	3 years
Real Property and Buildings [Member] \| Maximum [Member]
Property, Plant and Equipment, useful life (Year)	25 years
Vehicles [Member]
Property, Plant and Equipment	$ 50,316	49,754
Vehicles [Member] \| Minimum [Member]
Property, Plant and Equipment, useful life (Year)	2 years
Vehicles [Member] \| Maximum [Member]
Property, Plant and Equipment, useful life (Year)	10 years
Computer Equipment [Member]
Property, Plant and Equipment	$ 897	545
Computer Equipment [Member] \| Minimum [Member]
Property, Plant and Equipment, useful life (Year)	2 years
Computer Equipment [Member] \| Maximum [Member]
Property, Plant and Equipment, useful life (Year)	7 years
Construction in Progress [Member]
Property, Plant and Equipment	$ 14,946	8,082
Leasehold Improvements [Member]
Property, Plant and Equipment	$ 31	$ 31

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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 360
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482099/360-10-50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 4
-Subparagraph (a)
-SubTopic 20
-Topic 842
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479041/842-20-45-4

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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-Section 50
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-Publisher FASB
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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 360
-SubTopic 10
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-Section 50
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-URI https://asc.fasb.org/1943274/2147482099/360-10-50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 360
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482099/360-10-50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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-Paragraph 1
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