SEGMENT REPORTING (Tables)

12 Months Ended

Dec. 31, 2016

Segment Reporting [Abstract]

Summary of Financial Information by Reportable Segment

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		12,316		49,931
Other	102,412		1,615			3,097		2,130		38,760			2,020		1,728		51,533
Eliminations	—		(116,331		)	—		—		—			—		—		—
Total	$	565,030	$	—		$	61,856	$	44,945	$	38,652		$	54,238	$	119,899	$	631,512

Fiscal Year Ended December 31, 2015

Segment	Outside revenues		Inter-company revenue			Depreciation and amortization		Operating income (loss)			Interest expense, net			Capital expenditures		Goodwill		Total assets
Eastern	$	167,467	$	43,560		$	25,977	$	7,338		$	(200	)	$	24,840	$	17,429	$	212,922
Western	231,951		68,284			29,488		26,035			165			20,282		87,503		318,730
Recycling	46,338		995			4,480		(2,406		)	25			1,770		12,315		49,355
Other	100,744		1,014			2,759		899			40,100			3,103		1,729		52,662
Eliminations	—		(113,853		)	—		—			—			—		—		—
Total	$	546,500	$	—		$	62,704	$	31,866		$	40,090		$	49,995	$	118,976	$	633,669

Eight Months Ended December 31, 2014

Segment	Outside revenues		Inter-company revenue			Depreciation and amortization		Operating income (loss)			Interest expense, net			Capital expenditures		Goodwill		Total assets
Eastern	$	108,423	$	31,840		$	17,195	$	3,434		$	(315	)	$	27,354	$	17,429	$	211,020
Western	156,877		50,235			19,775		18,840			(6		)	21,884		87,697		333,028
Recycling	33,741		(175		)	2,876		(238		)	—			3,016		12,315		52,016
Other	69,333		1,763			1,639		74			25,713			2,807		1,729		62,135
Eliminations	—		(83,663		)	—		—			—			—		—		—
Total	$	368,374	$	—		$	41,485	$	22,110		$	25,392		$	55,061	$	119,170	$	658,199

Fiscal Year Ended April 30, 2014

Segment	Outside revenues		Inter-company revenue			Depreciation and amortization		Operating income (loss)			Interest expense, net			Capital expenditures		Goodwill		Total assets
Eastern	$	147,330	$	38,946		$	24,961	$	(1,105	)	$	(272	)	$	19,870	$	17,429	$	200,235
Western	216,911		70,809			28,693		13,298			112			20,471		87,666		331,304
Recycling	43,825		(139		)	4,262		(2,435		)	—			1,111		12,315		49,652
Other	89,567		2,019			2,423		2,158			38,023			4,507		1,729		57,094
Eliminations	—		(111,635		)	—		—			—			—		—		—
Total	$	497,633	$	—		$	60,339	$	11,916		$	37,863		$	45,959	$	119,139	$	638,285

Summary of Revenue Attributable to Services Provided by Company

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

	Fiscal Year Ended December 31,								Eight Months Ended December 31, 2014				Fiscal Year Ended April 30, 2014
	2016				2015
Collection	$	249,640	44.2	%	$	238,301	43.6	%	$	157,809	42.8	%	$	225,441	45.3	%
Disposal	154,211		27.3	%	156,536		28.6	%	102,304		27.8	%	128,778		25.9	%
Power generation	5,921		1.0	%	6,796		1.2	%	5,049		1.4	%	9,512		1.9	%
Processing	6,282		1.1	%	6,061		1.1	%	6,643		1.8	%	8,852		1.8	%
Solid waste operations	416,054		73.6	%	407,694		74.5	%	271,805		73.8	%	372,583		74.9	%
Organics	41,587		7.4	%	39,134		7.2	%	27,012		7.3	%	37,829		7.6	%
Customer solutions	54,478		9.6	%	53,334		9.8	%	35,816		9.7	%	43,396		8.7	%
Recycling	52,911		9.4	%	46,338		8.5	%	33,741		9.2	%	43,825		8.8	%
Total revenues	$	565,030	100.0	%	$	546,500	100.0	%	$	368,374	100.0	%	$	497,633	100.0	%