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Note 6 - Property, Plant and Equipment - Summary of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Property, Plant and Equipment, Gross	$ 109,669	$ 103,368
Less: accumulated depreciation	(59,651)	(55,699)
Property, Plant and Equipment, Net	50,018	47,669
Liquefaction Plants and Systems [Member]
Property, Plant and Equipment, Gross	48,005	47,636
Building [Member]
Property, Plant and Equipment, Gross	2,066	2,057
Vehicles [Member]
Property, Plant and Equipment, Gross	49,489	52,647
Office Equipment [Member]
Property, Plant and Equipment, Gross	457	470
Construction in Progress [Member]
Property, Plant and Equipment, Gross	9,620	527
Leasehold Improvements [Member]
Property, Plant and Equipment, Gross	$ 32	$ 31

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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