Property, Plant and Equipment (Tables)

6 Months Ended

Jun. 30, 2019

Property, Plant and Equipment [Abstract]

Summary of Property, Plant and Equipment

The following is a summary of property, plant and equipment at June 30, 2019 and December 31, 2018 (in thousands):



	Estimated Useful Lives in Years	June 30, 2019			December 31, 2018
Land	—	$	32,780		$	32,945
Land improvements	8-15	8,424			8,316
Buildings and improvements	13-39	124,618			125,088
Rental machinery and equipment	7	893,344			887,064
Machinery and equipment - other	7	61,978			61,796
Furniture, fixtures and computers	5	21,044			24,745
Automobiles and other vehicles	5	29,757			29,696
Leasehold improvements	7-15, or lease term if shorter	15,562			15,392
Construction in progress - machinery and equipment and land improvements	—	67,456			65,152
		1,254,963			1,250,194
Less: Accumulated depreciation		(869,326		)	(833,704		)
Total property, plant and equipment, net		$	385,637		$	416,490

Summary of Depreciation and Amortization Expense

The following table presents the depreciation and amortization expense associated with each line item for the three and six months ended June 30, 2019 and 2018 (in thousands):



	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2019		2018		2019		2018
Services	$	20,907	$	24,302	$	42,412	$	47,881
Products	425		1,131		859		2,268
General and administrative expenses	2,581		3,429		5,884		7,013
Total	$	23,913	$	28,862	$	49,155	$	57,162