PROPERTY AND EQUIPMENT (Tables)

9 Months Ended

Sep. 30, 2019

PROPERTY AND EQUIPMENT

Schedule of property and equipment

	September 30, 2019		December 31, 2018
	(in thousands)
Land	$	16,030	$	17,799
Buildings and leasehold improvements		107,894		106,626
Vehicles and equipment		57,774		83,435
Vehicles and equipment - finance lease		1,526		1,833
Machinery and equipment		732,184		758,528
Machinery and equipment - finance lease		48		532
Computer equipment and software		18,777		15,775
Computer equipment and software - finance lease		356		356
Office furniture and equipment		4,650		4,612
Disposal wells		64,962		64,038
Other		497		497
Construction in progress		79,398		60,347
		1,084,096		1,114,378
Less accumulated depreciation(1)		(617,740)		(611,530)
Property and equipment held-for-sale		890		—
Total property and equipment, net	$	467,246	$	502,848

(1) Includes $1.5 million and $1.3 million of accumulated depreciation related to finance leases as of September 30, 2019 and December 31, 2018, respectively.

Schedule of amortization of intangible assets

	Three Months Ended September 30,				Nine months ended September 30,
	2019		2018		2019		2018
	(in thousands)
Category
Depreciation expense from property and equipment	$	26,163	$	29,505	$	81,698	$	84,181
Amortization expense from finance leases		54		293		791		1,037
Amortization expense from intangible assets		2,998		3,039		8,993		10,294
Total depreciation and amortization	$	29,215	$	32,837	$	91,482	$	95,512

Schedule of property and equipment sold and divested

		Net Book Value of Property and
Type of sale event	Business	Equipment Sold or Divested
		(in thousands)
Business divestitures	Affirm subsidiary	$	11,275
Property and equipment sales	Affirm subsidiary		1,339
Business divestitures	Canadian operations		7,372
Property and equipment sales	Canadian operations		388
Property and equipment sales	Sand hauling operations		3,030
Total property and equipment sold and divested		$	23,404