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SEGMENT REPORTING - Summary of Revenues Attributable to Services Provided by Company (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Revenue from External Customer [Line Items] |  |  |  |
Revenues | $ 172,832 | $ 160,269 | $ 485,936 | $ 448,087
Collection |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 79,611 | 70,040 | 220,650 | 196,185
Disposal |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 48,737 | 44,881 | 136,217 | 118,334
Power generation |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 920 | 1,215 | 4,014 | 4,121
Processing |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 2,079 | 2,499 | 5,847 | 6,296
Solid waste operations |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 131,347 | 118,635 | 366,728 | 324,936
Organics |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 13,413 | 9,662 | 40,259 | 29,881
Customer solutions |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 17,195 | 15,612 | 48,315 | 44,064
Recycling |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | $ 10,877 | $ 16,360 | $ 30,634 | $ 49,206

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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=63488584&loc=d3e20235-122688 + Details
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