PROPERTY AND EQUIPMENT (Tables)

6 Months Ended

Jun. 30, 2020

PROPERTY AND EQUIPMENT

Schedule of property and equipment

	June 30, 2020		December 31, 2019
	(in thousands)
Land	$	14,213	$	16,030
Buildings and leasehold improvements		91,950		97,426
Vehicles and equipment		38,390		53,819
Vehicles and equipment - finance lease		1,031		1,291
Machinery and equipment		631,501		659,835
Machinery and equipment - finance lease		612		162
Pipelines		72,111		69,327
Computer equipment and software		6,753		8,051
Computer equipment and software - finance lease		356		356
Office furniture and equipment		1,027		1,157
Disposal wells		51,162		64,149
Other		—		497
Construction in progress		21,202		43,279
		930,308		1,015,379
Less accumulated depreciation(1)		(537,323)		(562,986)
Property and equipment held-for-sale, net		—		885
Total property and equipment, net	$	392,985	$	453,278

(1) Includes $1.5 million and $1.6 million of accumulated depreciation related to finance leases as of June 30, 2020 and December 31, 2019, respectively.

Schedule of amortization of intangible assets

	Three Months Ended June 30,				Six months ended June 30,
	2020		2019		2020		2019
	(in thousands)
Category
Depreciation expense from property and equipment	$	23,286	$	26,228	$	47,271	$	55,535
Amortization expense from finance leases		39		523		116		737
Amortization expense from intangible assets		2,986		2,969		5,979		5,938
Accretion expense from asset retirement obligations		31		29		(157)		57
Total depreciation and amortization	$	26,342	$	29,749	$	53,209	$	62,267