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BUSINESS COMBINATIONS - Additional Information (Details) - Western - transfer_station | 3 Months Ended
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Mar. 31, 2017 | Jun. 30, 2016
Solid Waste Collection |  |
Business Acquisition [Line Items] |  |
Number of transfer stations acquired | 1 |
Transfer Stations Acquisition |  |
Business Acquisition [Line Items] |  |
Number of transfer stations acquired |  | 3

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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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- Definition The number of businesses acquired by the entity during the period. + References No definition available. + Details
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- Details
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- Details
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- Details
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