The Company’s revenues are generated from the collection, transfer, recycling and disposal of non-hazardous solid waste and the treatment, recovery and disposal of non-hazardous E&P waste. No single contract or customer accounted for more than 10% of the Company’s total revenues at the consolidated or reportable segment level during the periods presented.

The Company manages its operations through five geographic solid waste operating segments and its E&P segment, which includes the majority of the Company’s E&P waste treatment and disposal operations. The Company’s five geographic solid waste operating segments and its E&P segment comprise the Company’s reportable segments. Each operating segment is responsible for managing several vertically integrated operations, which are comprised of districts.

The Company’s Eastern segment services customers located in northern Illinois, Kentucky, Maryland, Massachusetts, New Jersey, New York, North Carolina, Pennsylvania, Rhode Island, South Carolina, eastern Tennessee, Vermont, Virginia and Wisconsin; the Company’s Southern segment services customers located in Alabama, Arkansas, Florida, Georgia, Louisiana, Mississippi, southern Oklahoma, western Tennessee and Texas; the Company’s Western segment services customers located in Alaska, California, Idaho, Montana, Nevada, Oregon, Washington and western Wyoming; the Company’s Central segment services customers located in Arizona, Colorado, southern Illinois, Iowa, Kansas, Minnesota, Missouri, Nebraska, New Mexico, Oklahoma, South Dakota, western Texas, Utah and eastern Wyoming; and the Company’s Canada segment services customers located in the state of Michigan and in the provinces of Alberta, British Columbia, Manitoba, Ontario, Québec and Saskatchewan. The E&P segment services E&P customers located in Louisiana, New Mexico, North Dakota, Oklahoma, Texas, Wyoming and along the Gulf of Mexico.

The Company’s Chief Operating Decision Maker evaluates operating segment profitability and determines resource allocations based on several factors, of which the primary financial measure is segment EBITDA. The Company defines segment EBITDA as earnings before interest, taxes, depreciation, amortization, impairments and other operating items, and other income (expense). Segment EBITDA is not a measure of operating income, operating performance or liquidity under GAAP and may not be comparable to similarly titled measures reported by other companies. The Company’s management uses segment EBITDA in the evaluation of segment operating performance as it is a profit measure that is generally within the control of the operating segments. A reconciliation of segment EBITDA to Income before income tax provision is included at the end of this Note 11.

Summarized financial information concerning the Company’s reportable segments for the three months ended March 31, 2020 and 2019, is shown in the following tables:

Total assets for each of the Company’s reportable segments at March 31, 2020 and December 31, 2019, were as follows:


	March 31,		December 31,
	2020		2019
Eastern	$	3,060,723	$	3,099,283
Southern		2,971,182		2,990,247
Western		1,712,098		1,718,015
Central		1,875,151		1,885,468
Canada		2,265,718		2,490,291
E&P		950,019		962,202
Corporate		1,444,520		592,189
Total Assets	$	14,279,411	$	13,737,695

The following tables show changes in goodwill during the three months ended March 31, 2020 and 2019, by reportable segment:


	Eastern		Southern		Western		Central		Canada		E&P		Total
Balance as of December 31, 2019	$	1,331,180	$	1,528,225	$	400,037	$	729,470	$	1,521,939	$	—	$	5,510,851
Goodwill acquired		—		—		—		3,741		—		—		3,741
Goodwill acquisition adjustments		(524)		195		70		—		—		—		(259)
Impact of changes in foreign currency		—		—		—		—		(128,492)		—		(128,492)
Balance as of March 31, 2020	$	1,330,656	$	1,528,420	$	400,107	$	733,211	$	1,393,447	$	—	$	5,385,841


	Eastern		Southern		Western		Central		Canada		E&P		Total
Balance as of December 31, 2018	$	1,126,486	$	1,517,610	$	398,174	$	540,435	$	1,448,980	$	—	$	5,031,685
Goodwill acquired		—		—		918		3,702		—		—		4,620
Goodwill acquisition adjustments		(83)		(88)		—		—		(3)		—		(174)
Goodwill divested		—		(845)		—		—		—		—		(845)
Impact of changes in foreign currency		—		—		—		—		30,244		—		30,244
Balance as of March 31, 2019	$	1,126,403	$	1,516,677	$	399,092	$	544,137	$	1,479,221	$	—	$	5,065,530

A reconciliation of the Company’s primary measure of segment profitability (segment EBITDA) to Income before income tax provision in the Condensed Consolidated Statements of Net Income is as follows:


	Three Months Ended
	March 31,
	2020		2019
Eastern segment EBITDA	$	84,662	$	76,957
Southern segment EBITDA		74,517		74,377
Western segment EBITDA		81,029		77,005
Central segment EBITDA		73,151		63,027
Canada segment EBITDA		59,398		59,244
E&P segment EBITDA		31,802		31,609
Subtotal reportable segments		404,559		382,219
Unallocated corporate overhead		(3,631)		(3,858)
Depreciation		(150,821)		(146,847)
Amortization of intangibles		(31,638)		(30,542)
Impairments and other operating items		(1,506)		(16,112)
Interest expense		(37,990)		(37,287)
Interest income		2,175		3,311
Other income (expense), net		(9,521)		2,661
Income before income tax provision	$	171,627	$	153,545