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PROPERTY AND EQUIPMENT
3 Months Ended
Mar. 31, 2020
PROPERTY AND EQUIPMENT  
PROPERTY AND EQUIPMENT

NOTE 8.     PROPERTY AND EQUIPMENT

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Property and equipment consisted of the following:

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​

​

​

​

​

​

​

​

    

March 31, 

​

December 31, 

$s in thousands

​

2020

    

2019

Cell development costs

​

$

173,787

​

$

174,561

Land and improvements

​

 

53,004

​

 

52,909

Buildings and improvements

​

 

111,539

​

 

109,580

Railcars

​

 

17,299

​

 

17,299

Vehicles, vessels and other equipment

​

 

324,177

​

 

317,472

Construction in progress

​

 

71,740

​

 

61,537

Total property and equipment

​

 

751,546

​

 

733,358

Accumulated depreciation and amortization

​

 

(266,221)

​

 

(254,590)

Property and equipment, net

​

$

485,325

​

$

478,768

​

Depreciation and amortization expense for the three months ended March 31, 2020 and 2019 was $18.0 million and $8.1 million, respectively.