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Segment Reporting - Summary of Revenue Attributable to Services Provided by Company (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Segment Reporting Information [Line Items]
Revenues	$ 146,185	$ 141,924	$ 406,476	$ 392,400
Solid Waste Operations [Member]
Segment Reporting Information [Line Items]
Revenues	110,316	104,929	302,506	287,915
Solid Waste Operations [Member] | Collection [Member]
Segment Reporting Information [Line Items]
Revenues	63,588	60,648	177,550	171,559
Solid Waste Operations [Member] | Disposal [Member]
Segment Reporting Information [Line Items]
Revenues	43,168	39,561	114,999	101,764
Solid Waste Operations [Member] | Power Generation [Member]
Segment Reporting Information [Line Items]
Revenues	1,694	1,902	5,305	7,249
Solid Waste Operations [Member] | Processing [Member]
Segment Reporting Information [Line Items]
Revenues	1,866	2,818	4,652	7,343
Organics [Member]
Segment Reporting Information [Line Items]
Revenues	9,753	10,130	29,619	30,121
Customer Solutions [Member]
Segment Reporting Information [Line Items]
Revenues	13,416	13,559	39,895	38,718
Recycling [Member]
Segment Reporting Information [Line Items]
Revenues	$ 12,700	$ 13,306	$ 34,456	$ 35,646

X

- 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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- Definition

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+ References

No definition available.

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