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Goodwill and Intangible Assets - Schedule of Activity and Balances Related to Goodwill by Operating Segment (Detail) $ in Thousands | 6 Months Ended
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Jun. 30, 2016 USD ($)
Goodwill [Line Items] |
Goodwill, beginning balance | $ 118,976
Acquisitions | 923
Goodwill, ending balance | 119,899
Eastern Region [Member] |
Goodwill [Line Items] |
Goodwill, beginning balance | 17,429
Goodwill, ending balance | 17,429
Western Region [Member] |
Goodwill [Line Items] |
Goodwill, beginning balance | 87,503
Acquisitions | 923
Goodwill, ending balance | 88,426
Recycling [Member] |
Goodwill [Line Items] |
Goodwill, beginning balance | 12,315
Goodwill, ending balance | 12,315
Other [Member] |
Goodwill [Line Items] |
Goodwill, beginning balance | 1,729
Goodwill, ending balance | $ 1,729

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=64834752&loc=SL49117168-202975 + Details
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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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