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Note 6 - Property, Plant and Equipment, Net - Property, Plant and Equipment (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Property, Plant and Equipment | $ 117,246 | $ 110,646
Less: accumulated depreciation | (65,518) | (61,167)
Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization | 51,728 | 49,479
Liquefaction Plants and Systems [Member] |  |
Property, Plant and Equipment | $ 56,752 | 48,523
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 | 2,066
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 | $ 49,754 | 49,689
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 | $ 545 | 458
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 | $ 8,082 | 9,879
Leasehold Improvements [Member] |  |
Property, Plant and Equipment | $ 31 | $ 31

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- Definition Amount of accumulated depreciation and amortization from plant, property, and equipment and right-of-use asset from finance lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 360 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -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 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a) -SubTopic 20 -Topic 842 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
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- Definition Amount, after accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 360 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -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 50 -Paragraph 4 -Subparagraph (a) -SubTopic 20 -Topic 842 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
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- Definition Amount, before accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset. + 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 -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(18)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (a) -SubTopic 20 -Topic 842 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-1 + Details
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