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Property, Plant and Equipment
6 Months Ended 12 Months Ended
Jun. 30, 2019
Dec. 31, 2018
Property, Plant and Equipment [Abstract]    
Property, Plant and Equipment

(5) Property, Plant and Equipment

The Company’s property, plant and equipment consisted of the following (in thousands):

 

     June 30,
2019
     December 31,
2018
 

Liquefaction plants and systems

   $ 40,573      $ 39,679  

Real property and buildings

     1,396        1,396  

Vehicles and tanker trailers and equipment

     45,274        44,878  

Computer and office equipment

     250        238  

Construction in progress

     1,353        1,071  

Leasehold improvements

     1        1  
  

 

 

    

 

 

 
     88,847        87,263  

Less: accumulated depreciation

     (25,242      (20,657
  

 

 

    

 

 

 
   $ 63,605      $ 66,606  
  

 

 

    

 

 

 

Depreciation expense for the six months ended June 30, 2019 and 2018 totaled $4,585 thousand and $4,383 thousand respectively, of which all is included in the consolidated statements of operations as its own and separate line item.

(7) Property, Plant and Equipment

The Company’s property, plant and equipment consisted of the following (in thousands):

 

     December 31,  
     2018      2017  

Liquefaction plants and systems

   $ 39,679      $ 39,679  

Real property and buildings

     1,396        1,396  

Vehicles and tanker trailers and equipment

     44,878        43,407  

Computer and office equipment

     238        216  

Construction in progress

     1,071        880  

Leasehold improvements

     1        101  
  

 

 

    

 

 

 
     87,263        85,680  

Less: accumulated depreciation

     (20,657      (11,969
  

 

 

    

 

 

 
   $ 66,606      $ 73,711  
  

 

 

    

 

 

 

Depreciation expense for the years ended December 31, 2018 and 2017 totaled $8.8 million and $7.0 million, respectively, of which all is included in the consolidated statements of operations as its own and separate line item.