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Subsidiary Guarantors - Schedule of Condensed Consolidating Statement of Cash Flows (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Condensed Financial Statements, Captions [Line Items]    
Net cash provided by (used in) operating activities $ 1,724 $ (5,695)
Cash Flows from Investing Activities:    
Additions to property, plant and equipment (9,848) (4,444)
Payments on landfill operating lease contracts (500) (478)
Proceeds from divestiture transactions   4,550
Proceeds from sale of property and equipment 359 89
Net cash used in investing activities (9,989) (283)
Cash Flows from Financing Activities:    
Proceeds from long-term borrowings 64,300 197,591
Principal payments on long-term debt (57,948) (186,500)
Payments of debt issuance costs (99) (6,852)
Change in restricted cash 1,348 4,086
Distributions to noncontrolling interest holder   (1,495)
Net cash provided by financing activities 7,601 6,830
Net (decrease) increase in cash and cash equivalents (664) 852
Cash and cash equivalents, beginning of period 2,312 2,205
Cash and cash equivalents, end of period 1,648 3,057
Parent [Member]    
Condensed Financial Statements, Captions [Line Items]    
Net cash provided by (used in) operating activities (6,711) (10,886)
Cash Flows from Investing Activities:    
Additions to property, plant and equipment (371) (516)
Net cash used in investing activities (371) (516)
Cash Flows from Financing Activities:    
Proceeds from long-term borrowings 64,300 197,573
Principal payments on long-term debt (57,838) (186,267)
Payments of debt issuance costs (99) (6,852)
Change in restricted cash 1,348 4,086
Intercompany borrowings (1,134) 3,707
Net cash provided by financing activities 6,577 12,247
Net (decrease) increase in cash and cash equivalents (505) 845
Cash and cash equivalents, beginning of period 1,939 1,596
Cash and cash equivalents, end of period 1,434 2,441
Guarantors [Member]    
Condensed Financial Statements, Captions [Line Items]    
Net cash provided by (used in) operating activities 8,543 5,604
Cash Flows from Investing Activities:    
Additions to property, plant and equipment (9,477) (3,928)
Payments on landfill operating lease contracts (500) (478)
Payments related to investments   1,555
Proceeds from divestiture transactions   1,050
Proceeds from sale of property and equipment 359 89
Net cash used in investing activities (9,618) (1,712)
Cash Flows from Financing Activities:    
Proceeds from long-term borrowings   18
Principal payments on long-term debt (110) (233)
Intercompany borrowings 1,134 (3,707)
Net cash provided by financing activities 1,024 (3,922)
Net (decrease) increase in cash and cash equivalents (51) (30)
Cash and cash equivalents, beginning of period 252 253
Cash and cash equivalents, end of period 201 223
Non-Guarantors [Member]    
Condensed Financial Statements, Captions [Line Items]    
Net cash provided by (used in) operating activities (108) (413)
Cash Flows from Investing Activities:    
Payments related to investments   (1,555)
Proceeds from divestiture transactions   3,500
Net cash used in investing activities   1,945
Cash Flows from Financing Activities:    
Distributions to noncontrolling interest holder   (1,495)
Net cash provided by financing activities   (1,495)
Net (decrease) increase in cash and cash equivalents (108) 37
Cash and cash equivalents, beginning of period 121 356
Cash and cash equivalents, end of period $ 13 $ 393