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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

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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 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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