ACQUISITIONS (Tables)

12 Months Ended

Dec. 31, 2012

Summary of Consideration Transferred To Acquire Businesses And Amounts of Identifiable Assets Acquired, Liabilities Assumed and Noncontrolling Interests

The following table summarizes the consideration transferred to acquire these businesses and the amounts of identifiable assets acquired, liabilities assumed and noncontrolling interests associated with businesses acquired at the acquisition date for acquisitions consummated in the years ended December 31, 2012, 2011 and 2010:

	2012 Acquisitions			2011 Acquisitions			2010 Acquisitions
Fair value of consideration transferred:
Cash	$	241,525		$	257,852		$	81,010
Debt assumed*		12,986			84,737			20,633
Notes issued to sellers		—			10,656			—
Contingent consideration		21,314			22,486			3,928
		275,825			375,731			105,571
Recognized amounts of identifiable assets acquired, liabilities assumed and noncontrolling interests associated with businesses acquired:
Accounts receivable		10,874			9,613			3,864
Other current assets		1,062			1,056			742
Restricted assets		6,725			—			—
Property and equipment		127,023			114,463			37,881
Long-term franchise agreements and contracts		10,307			3,269			4,208
Indefinite-lived intangibles		35,344			42,283			32,759
Customer lists		21,837			34,463			5,373
Other intangibles		2,295			10,367			—
Other long-term assets		185			—			—
Deferred revenue		(5,056	)		(6,376	)		(775	)
Accounts payable		(3,393	)		(6,183	)		(248	)
Accrued liabilities		(2,139	)		(2,398	)		(404	)
Noncontrolling interests		—			(251	)		—
Other long-term liabilities		(3,480	)		(2,145	)		(146	)
Deferred income taxes		—			(11,466	)		—
Total identifiable net assets		201,584			186,695			83,254
Goodwill	$	74,241		$	189,036		$	22,317

^*  Debt assumed as part of 2011 and 2012 acquisitions was paid at close of acquisition.

Contingent Consideration of Obligations Related to Previous Acquisitions

Contingent consideration consists of obligations assumed by the Company related to previous acquisitions completed by R360, and consists of the following:

Prairie Disposal contingent consideration	$	24,376
Oilfield Holdings contingent consideration		8,000
Calpet contingent consideration		4,176
Claco Services contingent consideration		741
	$	37,293

Pro Forma Results of Operations

The following pro forma results of operations assume that the Company’s significant acquisitions occurring in 2012 and 2011, including the R360 acquisition, were acquired as of January 1, 2011 (unaudited):

	Year Ended December 31,
	2012		2011
Total revenue	$	1,866,458	$	1,792,220
Net income		164,176		184,109
Basic income per share		1.35		1.63
Diluted income per share		1.35		1.62

R360 Environmental Solutions Inc

Summary of Consideration Transferred To Acquire Businesses And Amounts of Identifiable Assets Acquired, Liabilities Assumed and Noncontrolling Interests

The following table summarizes the consideration transferred to acquire the R360 business and the amounts of identifiable assets acquired and liabilities assumed:

Fair value of consideration transferred:
Cash	$	1,338,344
Debt assumed*		9,306
Contingent consideration		37,293
		1,384,943
Recognized amounts of identifiable assets acquired and liabilities assumed associated with businesses acquired:
Accounts receivable		50,161
Other current assets		19,716
Property and equipment		894,651
Indefinite-lived intangibles		27,096
Customer lists		21,016
Accounts payable		(31,702	)
Accrued liabilities		(19,286	)
Other long-term liabilities		(8,066	)
Deferred income taxes		(14,568	)
Total identifiable net assets		939,018
Goodwill	$	445,925

^*  Debt assumed was paid at close of acquisition.