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Segment Reporting - Summary of Revenue Attributable to Services Provided by Company (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Revenue from External Customer [Line Items]
Revenues	$ 125,432	$ 116,577
Solid Waste Operations Collection [Member]
Revenue from External Customer [Line Items]
Revenues	57,851	53,326
Solid Waste Operations Disposal [Member]
Revenue from External Customer [Line Items]
Revenues	32,253	27,767
Solid Waste Operations Power Generation [Member]
Revenue from External Customer [Line Items]
Revenues	1,707	2,047
Solid Waste Operations Processing [Member]
Revenue from External Customer [Line Items]
Revenues	973	1,121
Solid Waste Operations [Member]
Revenue from External Customer [Line Items]
Revenues	92,784	84,261
Organics [Member]
Revenue from External Customer [Line Items]
Revenues	8,935	9,020
Customer Solutions [Member]
Revenue from External Customer [Line Items]
Revenues	13,075	13,002
Recycling [Member]
Revenue from External Customer [Line Items]
Revenues	$ 10,638	$ 10,294

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+ References

No definition available.

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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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