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Property, Plant and Equipment (Tables)
 12 Months Ended
Dec. 31, 2020
Property, Plant and Equipment [Abstract]  
Summary of Property, Plant and Equipment The following is a summary of property, plant and equipment at December 31, 2020 and 2019 (in thousands):
December 31,
Estimated Useful Lives in Years20202019
Land—$30,869 $30,724 
Land improvements
8-15
7,620 7,193 
Buildings and improvements
13-39
121,105 116,182 
Rental machinery and equipment
2-7
897,398 882,979 
Machinery and equipment - other
7
54,842 60,182 
Furniture, fixtures and computers
3-5
16,928 17,251 
Automobiles and other vehicles
5
25,948 28,734 
Leasehold improvements
7-15,or lease term if shorter
12,773 14,258 
Construction in progress - machinery and equipment—24,381 46,564 
1,191,864 1,204,067 
Less: Accumulated depreciation(919,157)(875,635)
Total property, plant and equipment, net$272,707 $328,432 
Summary of Depreciation and Amortization
The following table presents the depreciation and amortization associated with each line for the years ended December 31, 2020, 2019 and 2018 (in thousands):
December 31,
202020192018
Cost of revenue
Services$63,511 $80,072 $93,280 
Products701 1,511 4,354 
General and administrative expenses5,957 11,217 13,658 
Total$70,169 $92,800 $111,292