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SEGMENT REPORTING - Summary of Revenue Attributable to Services Provided by Company (Detail) - USD ($) $ in Thousands | 3 Months Ended | 8 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2016 | Dec. 31, 2015 | Apr. 30, 2014
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 143,795 | $ 151,133 | $ 144,670 | $ 125,432 | $ 140,024 | $ 146,185 | $ 143,714 | $ 116,577 | $ 368,374 | $ 565,030 | $ 546,500 | $ 497,633
Revenues percentage |  |  |  |  |  |  |  |  | 100.00% | 100.00% | 100.00% | 100.00%
Collection |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | $ 157,809 | $ 249,640 | $ 238,301 | $ 225,441
Revenues percentage |  |  |  |  |  |  |  |  | 42.80% | 44.20% | 43.60% | 45.30%
Disposal |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | $ 102,304 | $ 154,211 | $ 156,536 | $ 128,778
Revenues percentage |  |  |  |  |  |  |  |  | 27.80% | 27.30% | 28.60% | 25.90%
Power generation |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | $ 5,049 | $ 5,921 | $ 6,796 | $ 9,512
Revenues percentage |  |  |  |  |  |  |  |  | 1.40% | 1.00% | 1.20% | 1.90%
Processing |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | $ 6,643 | $ 6,282 | $ 6,061 | $ 8,852
Revenues percentage |  |  |  |  |  |  |  |  | 1.80% | 1.10% | 1.10% | 1.80%
Solid waste operations |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | $ 271,805 | $ 416,054 | $ 407,694 | $ 372,583
Revenues percentage |  |  |  |  |  |  |  |  | 73.80% | 73.60% | 74.50% | 74.90%
Organics |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | $ 27,012 | $ 41,587 | $ 39,134 | $ 37,829
Revenues percentage |  |  |  |  |  |  |  |  | 7.30% | 7.40% | 7.20% | 7.60%
Customer solutions |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | $ 35,816 | $ 54,478 | $ 53,334 | $ 43,396
Revenues percentage |  |  |  |  |  |  |  |  | 9.70% | 9.60% | 9.80% | 8.70%
Recycling |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | $ 33,741 | $ 52,911 | $ 46,338 | $ 43,825
Revenues percentage |  |  |  |  |  |  |  |  | 9.20% | 9.40% | 8.50% | 8.80%

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