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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Income Statement [Abstract] |  |
Revenues | $ 147,455 | $ 133,802
Operating expenses: |  |
Cost of operations | 105,610 | 94,544
General and administration | 21,027 | 18,845
Depreciation and amortization | 15,983 | 13,849
Contract settlement charge | 2,100 | 0
Southbridge Landfill closure charge | 1,586 | 0
Development project charge | 311 | 0
Total operating expenses | 146,617 | 127,238
Operating income | 838 | 6,564
Other expense (income): |  |
Interest income | (29) | (69)
Interest expense | 6,454 | 6,450
Loss on debt extinguishment | 0 | 472
Other income | (89) | (81)
Other expense, net | 6,336 | 6,772
Loss before income taxes | (5,498) | (208)
(Benefit) provision for income taxes | (1,588) | 16
Net loss | $ (3,910) | $ (224)
Basic and diluted earnings per share attributable to common stockholders: |  |
Weighted average common shares outstanding (in shares) | 42,370 | 41,584
Basic and diluted earnings per common share (in dollars per share) | $ (0.09) | $ (0.01)

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