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PROPERTY, PLANT AND EQUIPMENT, NET
 12 Months Ended
Dec. 31, 2021
Property, Plant and Equipment [Abstract]  
PROPERTY, PLANT AND EQUIPMENT, NET PROPERTY, PLANT AND EQUIPMENT, NET
    The Company’s property, plant and equipment, net consisted of the following (in thousands):
Estimated
Useful Life		December 31,
(years)20212020
Liquefaction plants and systems
10 - 15
$47,235 $40,841 
Real property and buildings
3 - 25
2,348 1,649 
Vehicles and tanker trailers and equipment
2 - 10
50,027 47,179 
Computer and office equipment
2 - 7
691 532 
Construction in progress—1,495 191 
Leasehold improvements—31 30 
101,827 90,422 
Less: accumulated depreciation(47,140)(38,384)
$54,687 $52,038 
Depreciation expense for December 31, 2021 and 2020 totaled $9.1 million and $9.0 million respectively, of which all is included in the Consolidated Statements of Operations as its own line item.
Acquisition of Port Allen Facility
On June 1, 2021 the Company closed on the purchase of an LNG production facility in Port Allen, Louisiana. The acquisition included the LNG liquefaction facility, the related assets and real property. The Company paid consideration of $5.0 million in cash plus legal fees and closing costs of approximately $0.1 million and 500,000 shares of Company common stock, subject to a registration rights agreement, which shares were valued at $3.8 million. The purchase was accounted as an asset acquisition.