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Property, Plant and Equipment (Tables)
 3 Months Ended
Mar. 31, 2021
Property, Plant and Equipment [Abstract]  
Summary of Property, Plant and Equipment The following is a summary of property, plant and equipment at March 31, 2021 and December 31, 2020 (in thousands):
Estimated
Useful Lives
in Years		March 31,
2021		December 31,
2020
Land—$31,080 $30,869 
Land improvements
8-15
7,688 7,620 
Buildings and improvements
13-39
118,592 121,105 
Rental machinery and equipment
2-7
906,117 897,398 
Machinery and equipment - other
7
54,869 54,842 
Furniture, fixtures and computers
3-5
19,756 16,928 
Automobiles and other vehicles
5
25,894 25,948 
Leasehold improvements
7-15, or lease term if shorter
12,754 12,773 
Construction in progress - machinery and equipment—12,412 24,381 
1,189,162 1,191,864 
Less: Accumulated depreciation(933,761)(919,157)
Total property, plant and equipment, net$255,401 $272,707 
Summary of Depreciation and Amortization Expense The following table presents the depreciation and amortization expense associated with each line item for the three months ended March 31, 2021 and 2020 (in thousands):
Three Months Ended
March 31,
20212020
Services$14,472 $17,263 
Products138 239 
General and administrative expenses1,497 2,216 
Total$16,107 $19,718