SEGMENT REPORTING (Tables)

12 Months Ended

Dec. 31, 2017

The following table reconciles third-party revenues to direct revenues for the years ended December 31, 2017, 2016 and 2015 (in thousands):



	For the Year Ended December 31, 2017
	Technical Services		Industrial and Field Services			Safety-Kleen			Oil, Gas and Lodging Services		Corporate Items			Totals
Third-party revenues	$	980,232	$	631,216		$	1,213,703		$	117,252	$	2,575		$	2,944,978
Intersegment revenues, net	161,533		(37,694		)	(125,822		)	1,983		—			—
Corporate Items, net	2,384		200			5			368		(2,957		)	—
Direct revenues	$	1,144,149	$	593,722		$	1,087,886		$	119,603	$	(382	)	$	2,944,978



	For the Year Ended December 31, 2016
	Technical Services		Industrial and Field Services			Safety-Kleen			Oil, Gas and Lodging Services		Corporate Items			Totals
Third-party revenues	$	906,495	$	618,245		$	1,110,727		$	116,692	$	3,067		$	2,755,226
Intersegment revenues, net	147,866		(35,724		)	(115,013		)	2,871		—			—
Corporate Items, net	2,374		(306		)	369			320		(2,757		)	—
Direct revenues	$	1,056,735	$	582,215		$	996,083		$	119,883	$	310		$	2,755,226



	For the Year Ended December 31, 2015
	Technical Services		Industrial and Field Services			Safety-Kleen			Oil, Gas and Lodging Services		Corporate Items			Totals
Third-party revenues	$	991,410	$	1,023,638		$	1,060,926		$	198,705	$	458		$	3,275,137
Intersegment revenues, net	144,084		(32,903		)	(119,232		)	8,051		—			—
Corporate Items, net	3,586		(782		)	(5		)	383		(3,182		)	—
Direct revenues	$	1,139,080	$	989,953		$	941,689		$	207,139	$	(2,724	)	$	3,275,137

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



	For the Year Ended December 31,
	2017			2016			2015
Adjusted EBITDA:
Technical Services	$	276,592		$	271,176		$	291,737
Industrial and Field Services	43,010			51,191			161,447
Safety-Kleen	249,811			219,546			172,262
Oil, Gas and Lodging Services	1,708			(3,292		)	11,704
Corporate Items	(145,464		)	(138,267		)	(132,983		)
Total	425,657			400,354			504,167
Reconciliation to Consolidated Statements of Operations:
Accretion of environmental liabilities	9,460			10,177			10,402
Depreciation and amortization	288,422			287,002			274,194
Goodwill impairment charges	—			34,013			31,992
Income from operations	127,775			69,162			187,579
Other expense (income), net	6,119			(6,195		)	1,380
Loss on early extinguishment of debt	7,891			—			—
Gain on sale of businesses	(30,732		)	(16,884		)	—
Interest expense, net of interest income	85,808			83,525			76,553
Income from operations before (benefit) provision for income taxes	$	58,689		$	8,716		$	109,646

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



	December 31, 2017		December 31, 2016
Property, plant and equipment, net
Technical Services	$	504,754	$	521,134
Industrial and Field Services	254,091		245,143
Safety-Kleen	582,162		584,647
Oil, Gas and Lodging Services	168,294		182,038
Corporate Items	78,064		78,865
Total property, plant and equipment, net	$	1,587,365	$	1,611,827

Goodwill and Permits and other intangibles, net
Technical Services
Goodwill	$	60,133	$	61,116
Permits and other intangibles, net	73,775		78,625
Total Technical Services	133,908		139,741

Industrial and Field Services
Goodwill	112,253		107,968
Permits and other intangibles, net	17,049		17,817
Total Industrial and Field Services	129,302		125,785

Safety-Kleen
Goodwill	306,137		296,070
Permits and other intangibles, net	371,609		391,390
Total Safety-Kleen	677,746		687,460

Oil, Gas and Lodging Services
Goodwill	—		—
Permits and other intangibles, net	6,695		10,889
Total Oil, Gas and Lodging Services	6,695		10,889

Total	$	947,651	$	963,875

The following table presents the total assets by reported segment (in thousands):



	December 31, 2017		December 31, 2016		December 31, 2015
Technical Services	$	847,994	$	862,957	$	800,060
Industrial and Field Services	464,142		446,826		461,180
Safety-Kleen	1,471,291		1,474,755		1,297,971
Oil, Gas and Lodging Services	229,105		253,242		333,245
Corporate Items	694,038		644,140		538,972
Total	$	3,706,570	$	3,681,920	$	3,431,428

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