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Property, Plant and Equipment (Tables)
 9 Months Ended
Sep. 30, 2020
Property, Plant and Equipment [Abstract]  
Summary of Property, Plant and Equipment The following is a summary of property, plant and equipment at September 30, 2020 and December 31, 2019 (in thousands):
Estimated
Useful Lives
in Years		September 30,
2020		December 31,
2019
Land—$30,362 $30,724 
Land improvements
8-15
7,676 7,193 
Buildings and improvements
13-39
119,624 116,182 
Rental machinery and equipment
5-7
892,371 882,979 
Machinery and equipment - other
7
57,430 60,182 
Furniture, fixtures and computers
5
17,208 17,251 
Automobiles and other vehicles
5
26,442 28,734 
Leasehold improvements
7-15, or lease term if shorter
13,445 14,258 
Construction in progress - machinery and equipment—29,264 46,564 
1,193,822 1,204,067 
Less: Accumulated depreciation(907,482)(875,635)
Total property, plant and equipment, net$286,340 $328,432 
Summary of Depreciation and Amortization Expense The following table presents the depreciation and amortization expense associated with each line item for the three and nine months ended September 30, 2020 and 2019 (in thousands):
Three Months EndedNine Months Ended
September 30,September 30,
2020201920202019
Services$14,582 $18,224 $47,616 $60,636 
Products144 376 567 1,235 
General and administrative expenses1,224 2,882 4,737 8,766 
Total$15,950 $21,482 $52,920 $70,637