SEGMENT REPORTING

We report selected information about operating segments in a manner consistent with that used for internal management reporting. We classify our solid waste operations on a geographic basis through regional operating segments, our Western and Eastern regions. Revenues associated with our solid waste operations are derived mainly from solid waste collection and disposal, landfill, landfill gas-to-energy, transfer and recycling services in the northeastern United States. Our revenues in the Recycling segment are derived from municipalities and customers in the form of processing fees, tipping fees and commodity sales. Organics services, ancillary operations, along with major account and industrial services, are included in our Other segment.

Fiscal Year Ended December 31, 2018



Segment	Outside revenues		Inter-company revenue			Depreciation and amortization		Operating income (loss)			Interest expense, net			Capital expenditures		Goodwill		Total assets
Eastern	$	206,473	$	52,866		$	26,538	$	4,684		$	12		$	23,393	$	28,154	$	184,679
Western	286,262		81,515			35,843		41,529			(148		)	41,850		120,536		428,934
Recycling	42,191		6,426			4,345		(7,805		)	140			4,476		12,315		48,629
Other	125,734		1,982			3,782		1,325			26,017			3,513		1,729		70,168
Eliminations	—		(142,789		)	—		—			—			—		—		—
Total	$	660,660	$	—		$	70,508	$	39,733		$	26,021		$	73,232	$	162,734	$	732,410

Fiscal Year Ended December 31, 2017



Segment	Outside revenues		Inter-company revenue			Depreciation and amortization		Operating income (loss)			Interest expense, net			Capital expenditures		Goodwill		Total assets
Eastern	$	181,170	$	50,335		$	23,815	$	(51,867	)	$	3		$	17,153	$	19,192	$	157,248
Western	250,771		71,510			30,766		35,035			(220		)	42,082		89,369		344,324
Recycling	62,307		246			4,125		2,805			143			2,006		12,315		48,612
Other	105,061		1,881			3,396		1,444			24,961			3,621		1,729		64,765
Eliminations	—		(123,972		)	—		—			—			—		—		—
Total	$	599,309	$	—		$	62,102	$	(12,583	)	$	24,887		$	64,862	$	122,605	$	614,949

Fiscal Year Ended December 31, 2016



Segment	Outside revenues		Inter-company revenue			Depreciation and amortization		Operating income (loss)		Interest expense, net			Capital expenditures		Goodwill		Total assets
Eastern	$	176,539	$	45,728		$	27,036	$	9,697	$	(16	)	$	18,363	$	17,429	$	202,420
Western	233,168		67,985			27,511		30,576		(248		)	31,637		88,426		327,628
Recycling	52,911		1,003			4,212		2,542		156			2,218		12,315		49,931
Other	102,412		1,615			3,097		2,130		38,760			2,020		1,729		51,533
Eliminations	—		(116,331		)	—		—		—			—		—		—
Total	$	565,030	$	—		$	61,856	$	44,945	$	38,652		$	54,238	$	119,899	$	631,512

Amount of our total revenue attributable to services provided are as follows:



	Fiscal Year Ended December 31,
	2018				2017				2016
Collection	$	303,418	45.9	%	$	263,688	44.0	%	$	249,640	44.2	%
Disposal	181,110		27.4	%	160,073		26.7	%	154,211		27.3	%
Power generation	5,129		0.8	%	5,375		0.9	%	5,921		1.0	%
Processing	7,174		1.1	%	7,994		1.3	%	6,282		1.1	%
Solid waste operations	496,831		75.2	%	437,130		72.9	%	416,054		73.6	%
Organics	54,174		8.2	%	39,815		6.6	%	41,587		7.4	%
Customer solutions	67,464		10.2	%	60,057		10.1	%	54,478		9.6	%
Recycling	42,191		6.4	%	62,307		10.4	%	52,911		9.4	%
Total revenues	$	660,660	100.0	%	$	599,309	100.0	%	$	565,030	100.0	%