Note 6 - Property, Plant and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

Property, Plant and Equipment [Table Text Block]

	Estimated
	Useful Life	December 31,
	(years)	2023			2022
Liquefaction plants and systems	10 - 15	$	48,523		$	47,636
Real property and buildings	3 - 25		2,066			2,057
Vehicles and tanker trailers and equipment	2 - 10		49,689			52,647
Computer and office equipment	2 - 7		458			470
Construction in progress	—		9,879			527
Leasehold improvements	—		31			31
			110,646			103,368
Less: accumulated depreciation			(61,167	)		(55,699	)
		$	49,479		$	47,669