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Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Cash Flows from Operating Activities:    
Net loss $ (2,422) $ (7,021)
Adjustments to reconcile net loss to net cash provided by operating activities:    
Depreciation and amortization 30,255 29,990
Depletion of landfill operating lease obligations 4,443 4,359
Interest accretion on landfill and environmental remediation liabilities 1,782 1,704
Amortization of debt issuance costs and discount on long-term debt 2,079 1,999
Stock-based compensation 1,622 1,435
Gain on sale of property and equipment (520) (93)
Divestiture transactions   (5,611)
Loss on debt extinguishment 545 521
Loss on derivative instruments   198
Excess tax benefit on the vesting of share based awards   (153)
Deferred income taxes 303 416
Changes in assets and liabilities, net of effects of acquisitions and divestitures:    
Accounts receivable (916) (7,674)
Accounts payable 1,116 (371)
Prepaid expenses, inventories and other assets (782) 3,853
Accrued expenses and other liabilities (1,920) 337
Net cash provided by operating activities 35,585 23,889
Cash Flows from Investing Activities:    
Acquisitions, net of cash acquired (2,439)  
Acquisition related additions to property, plant and equipment (38)  
Additions to property, plant and equipment (23,460) (16,311)
Payments on landfill operating lease contracts (3,326) (1,425)
Proceeds from divestiture transactions   5,335
Proceeds from sale of property and equipment 957 259
Proceeds from property insurance settlement   546
Net cash used in investing activities (28,306) (11,596)
Cash Flows from Financing Activities:    
Proceeds from long-term borrowings 126,000 231,728
Principal payments on long-term debt (132,716) (239,340)
Payments of debt issuance costs (682) (8,063)
Payments of debt extinguishment costs (310)  
Excess tax benefit on the vesting of share based awards   153
Change in restricted cash 499 5,677
Distributions to noncontrolling interest holder   (1,495)
Net cash used in financing activities (7,209) (11,340)
Net increase in cash and cash equivalents 70 953
Cash and cash equivalents, beginning of period 2,312 2,205
Cash and cash equivalents, end of period 2,382 3,158
Cash paid during the period for:    
Interest 18,394 17,063
Income taxes, net of refunds 203 $ 55
Supplemental Disclosures of Non-Cash Investing and Financing Activities:    
Non-current assets obtained through long-term obligations $ 866