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Segment Reporting - Summary of Revenue Attributable to Services Provided by Company (Detail) - USD ($) $ in Thousands | 3 Months Ended
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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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- 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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