SEGMENT REPORTING (Tables)

9 Months Ended

Sep. 30, 2017

Segment Reporting [Abstract]

Reconciliation of third party revenues to direct revenues

The following table reconciles third party revenues to direct revenues for the three and nine months ended September 30, 2017 and 2016 (in thousands):

	For the Three Months Ended September 30, 2017											For the Three Months Ended September 30, 2016
	Third party revenues		Intersegment revenues, net			Corporate Items, net			Direct revenues			Third party revenues		Intersegment revenues, net			Corporate Items, net			Direct revenues
Technical Services	$	246,329	$	41,366		$	637		$	288,332		$	232,482	$	38,795		$	492		$	271,769
Industrial and Field Services	163,808		(10,262		)	45			153,591			172,191		(10,867		)	(32		)	161,292
Safety-Kleen	315,028		(31,757		)	3			283,274			297,082		(28,716		)	1			268,367
Oil, Gas and Lodging Services	30,026		653			79			30,758			27,644		788			105			28,537
Corporate Items	655		—			(764		)	(109		)	121		—			(566		)	(445		)
Total	$	755,846	$	—		$	—		$	755,846		$	729,520	$	—		$	—		$	729,520

	For the Nine Months Ended September 30, 2017											For the Nine Months Ended September 30, 2016
	Third party revenues		Intersegment revenues, net			Corporate Items, net			Direct revenues			Third party revenues		Intersegment revenues, net			Corporate Items, net			Direct revenues
Technical Services	$	731,034	$	121,411		$	1,767		$	854,212		$	680,717	$	109,217		$	1,547		$	791,481
Industrial and Field Services	465,264		(27,688		)	16			437,592			467,019		(25,464		)	(348		)	441,207
Safety-Kleen	910,885		(95,465		)	4			815,424			821,758		(86,329		)	368			735,797
Oil, Gas and Lodging Services	89,403		1,742			218			91,363			91,555		2,576			288			94,419
Corporate Items	989		—			(2,005		)	(1,016		)	2,064		—			(1,855		)	209
Total	$	2,197,575	$	—		$	—		$	2,197,575		$	2,063,113	$	—		$	—		$	2,063,113

Reconciliation to consolidated statements of income from adjusted EBITDA

The following table presents Adjusted EBITDA information used by management by reported segment (in thousands):

	For the Three Months Ended						For the Nine Months Ended
	September 30,						September 30,
	2017			2016			2017			2016
Adjusted EBITDA:
Technical Services	$	72,338		$	72,333		$	203,906		$	201,622
Industrial and Field Services	13,255			18,234			36,652			38,627
Safety-Kleen	70,305			70,053			182,953			165,342
Oil, Gas and Lodging Services	912			24			969			135
Corporate Items	(33,811		)	(33,993		)	(100,655		)	(101,310		)
Total	$	122,999		$	126,651		$	323,825		$	304,416
Reconciliation to Consolidated Statements of Operations:
Accretion of environmental liabilities	2,347			2,476			7,053			7,529
Depreciation and amortization	72,989			73,360			216,932			215,655
Goodwill impairment charge	—			34,013			—			34,013
Income from operations	47,663			16,802			99,840			47,219
Other expense	432			198			2,814			737
Loss on early extinguishment of debt	1,846			—			7,891			—
Loss (gain) on sale of business	77			(16,431		)	(31,645		)	(16,431		)
Interest expense, net of interest income	20,675			21,565			65,743			62,192
Income before provision for income taxes	$	24,633		$	11,470		$	55,037		$	721

PP&E, intangible assets and total assets by segment

The following table presents certain assets by reportable segment and in the aggregate (in thousands):

	September 30, 2017
	Technical Services		Industrial and Field Services		Safety-Kleen		Oil, Gas and Lodging Services		Corporate Items		Totals
Property, plant and equipment, net	$	507,069	$	264,662	$	585,493	$	177,106	$	77,641	$	1,611,971
Goodwill	60,154		112,365		306,209		—		—		478,728
Permits and other intangibles, net	75,260		17,139		377,458		7,782		—		477,639
Total assets	$	848,578	$	485,297	$	1,475,764	$	239,308	$	699,406	$	3,748,353

	December 31, 2016
	Technical Services		Industrial and Field Services		Safety-Kleen		Oil, Gas and Lodging Services		Corporate Items		Totals
Property, plant and equipment, net	$	521,134	$	245,143	$	584,647	$	182,038	$	78,865	$	1,611,827
Goodwill	61,116		107,968		296,070		—		—		465,154
Permits and other intangibles, net	78,625		17,817		391,390		10,889		—		498,721
Total assets	$	862,957	$	446,826	$	1,474,755	$	253,242	$	644,140	$	3,681,920

Total assets by geographical area

The following table presents total assets by geographical area (in thousands):

	September 30, 2017		December 31, 2016
United States	$	3,005,644	$	2,960,337
Canada	742,709		721,583
Total	$	3,748,353	$	3,681,920