SEGMENT REPORTING (Tables)

6 Months Ended

Jun. 30, 2014

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 six months ended June 30, 2014 and 2013 (in thousands):

	For the Three Months Ended June 30, 2014											For the Six Months Ended June 30, 2014
	Third party revenues		Intersegment revenues, net			Corporate Items, net			Direct revenues			Third party revenues		Intersegment revenues, net			Corporate Items, net			Direct revenues
Technical Services	$	256,798	$	40,082		$	778		$	297,658		$	493,579	$	77,516		$	1,177		$	572,272
Industrial and Field Services	185,154		(11,047		)	36			174,143			347,114		(22,805		)	191			324,500
Oil Re-refining and Recycling	144,016		(54,861		)	(5		)	89,150			272,937		(102,977		)	(5		)	169,955
SK Environmental Services	171,324		23,307			—			194,631			332,712		43,264			(58		)	375,918
Lodging Services	42,872		900			25			43,797			99,566		1,294			26			100,886
Oil and Gas Field Services	58,177		1,619			(22		)	59,774			158,949		3,708			(10		)	162,647
Corporate Items	139		—			(812		)	(673		)	290		—			(1,321		)	(1,031		)
Total	$	858,480	$	—		$	—		$	858,480		$	1,705,147	$	—		$	—		$	1,705,147

	For the Three Months Ended June 30, 2013											For the Six Months Ended June 30, 2013
	Third party revenues		Intersegment revenues, net			Corporate Items, net			Direct revenues			Third party revenues			Intersegment revenues, net			Corporate Items, net			Direct revenues
Technical Services	$	256,262	$	25,789		$	1,339		$	283,390		$	490,201		$	50,208		$	2,191		$	542,600
Industrial and Field Services	199,225		(12,680		)	(128		)	186,417			368,846			(26,440		)	(106		)	342,300
Oil Re-refining and Recycling	123,008		(48,261		)	—			74,747			263,092			(98,287		)	—			164,805
SK Environmental Services	166,523		32,207			—			198,730			326,325			67,077			84			393,486
Lodging Services	46,685		1,207			101			47,993			100,015			1,809			217			102,041
Oil and Gas Field Services	68,444		1,738			(49		)	70,133			183,607			5,633			(200		)	189,040
Corporate Items	381		—			(1,263		)	(882		)	(9,395		)	—			(2,186		)	(11,581		)
Total	$	860,528	$	—		$	—		$	860,528		$	1,722,691		$	—		$	—		$	1,722,691

Reconciliation to consolidated statements of income to adjusted EBITDA

The following table presents Adjusted EBITDA information used by management for each reportable segment (in thousands). The Company does not allocate interest expense, income taxes, depreciation, amortization, accretion of environmental liabilities, pre-tax, non-cash acquisition accounting inventory adjustment, and other expense (income) to its segments.    

	For the Three Months Ended						For the Six Months Ended
	June 30,						June 30,
	2014			2013			2014			2013
Adjusted EBITDA:
Technical Services	$	84,297		$	69,390		$	146,474		$	129,435
Industrial and Field Services	30,716			34,760			47,088			48,572
Oil Re-refining and Recycling	15,196			12,752			27,779			28,098
SK Environmental Services	31,307			34,076			54,132			61,082
Lodging Services	15,487			19,259			33,224			41,560
Oil and Gas Field Services	1,812			4,144			18,143			31,928
Corporate Items	(43,016		)	(50,791		)	(89,055		)	(105,857		)
Total	$	135,799		$	123,590		$	237,785		$	234,818
Reconciliation to Consolidated Statements of Income:
Pre-tax, non-cash acquisition accounting inventory adjustment	—			—			—			13,559
Accretion of environmental liabilities	2,609			2,879			5,333			5,714
Depreciation and amortization	66,075			67,468			135,431			127,474
Income from operations	67,115			53,243			97,021			88,071
Other expense (income)	655			(1,655		)	(3,523		)	(2,180		)
Interest expense, net of interest income	19,382			19,585			38,936			39,458
Income before provision for income taxes	$	47,078		$	35,313		$	61,608		$	50,793

PP&E, intangible assets and total assets by segment

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

	June 30, 2014
	Technical Services		Industrial and Field Services		Oil Re-refining and Recycling		SK Environmental Services		Lodging Services		Oil and Gas Field Services		Corporate Items		Totals
Property, plant and equipment, net	$	408,977	$	260,083	$	208,630	$	245,513	$	156,730	$	229,017	$	102,348	$	1,611,298
Goodwill	50,432		109,785		174,739		172,223		35,395		36,400		—		578,974
Permits and other intangible, net	78,669		19,747		156,882		259,691		12,936		25,733		—		553,658
Total assets	$	751,444	$	416,912	$	670,797	$	742,795	$	237,671	$	390,314	$	722,510	$	3,932,443

	December 31, 2013
	Technical Services		Industrial and Field Services		Oil Re-refining and Recycling		SK Environmental Services		Lodging Services		Oil and Gas Field Services		Corporate Items		Totals
Property, plant and equipment, net	$	400,544	$	251,826	$	211,458	$	239,650	$	166,252	$	224,585	$	107,855	$	1,602,170
Goodwill	45,599		109,873		171,161		172,309		35,512		36,506		—		570,960
Permits and other intangible, net	80,302		21,147		160,807		265,106		14,730		27,881		—		569,973
Total assets	$	699,675	$	410,233	$	642,901	$	774,756	$	239,056	$	381,057	$	806,000	$	3,953,678

Total assets by geographical area

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

	June 30, 2014		December 31, 2013
United States	$	2,695,931	$	2,684,686
Canada	1,233,547		1,266,505
Other foreign	2,965		2,487
Total	$	3,932,443	$	3,953,678