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QUARTERLY DATA (UNAUDITED) (Tables) | 12 Months Ended
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Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract] |
Quarterly Data (Unaudited) |
| First Quarter |  | Second Quarter |  | Third Quarter |  | Fourth Quarter
| (in thousands except per share amounts)
2018 |  |  |  |  |  |  |
Revenues | $ | 749,778 |  |  | $ | 849,140 |  |  | $ | 843,181 |  |  | $ | 858,204 |
Cost of revenues (1) | 546,425 |  |  | 583,584 |  |  | 580,685 |  |  | 594,857 |
Income from operations | 10,991 |  |  | 64,353 |  |  | 65,745 |  |  | 41,485 |
Other (expense) income, net | (299 | ) |  | 846 |  |  | (996 | ) |  | (4,061 | )
Net (loss) income (2) | (12,631 | ) |  | 30,747 |  |  | 31,089 |  |  | 16,431 |
Basic (loss) earnings per share (3) | (0.22 | ) |  | 0.55 |  |  | 0.55 |  |  | 0.29 |
Diluted (loss) earnings per share (3) | (0.22 | ) |  | 0.54 |  |  | 0.55 |  |  | 0.29 |
| First Quarter |  | Second Quarter |  | Third Quarter |  | Fourth Quarter
| (in thousands except per share amounts)
2017 |  |  |  |  |  |  |
Revenues | $ | 688,941 |  |  | $ | 752,788 |  |  | $ | 755,846 |  |  | $ | 747,403 |
Cost of revenues (1) | 496,585 |  |  | 519,803 |  |  | 519,595 |  |  | 526,690 |
Income from operations | 5,433 |  |  | 46,744 |  |  | 47,663 |  |  | 27,935 |
Other expense, net | (1,549 | ) |  | (833 | ) |  | (432 | ) |  | (3,305 | )
Net (loss) income (2) | (21,393 | ) |  | 25,880 |  |  | 12,058 |  |  | 84,194 |
Basic (loss) earnings per share (3) | (0.37 | ) |  | 0.45 |  |  | 0.21 |  |  | 1.48 |
Diluted (loss) earnings per share (3) | (0.37 | ) |  | 0.45 |  |  | 0.21 |  |  | 1.48 |
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(1) | Items shown separately on the statements of operations consist of (i) accretion of environmental liabilities and (ii) depreciation and amortization.
(2) | The second quarter of 2017 net income includes a $31.7 million pre-tax gain on the sale of a non-core line of business within the Company's Environmental Services segment and a $6.0 million loss on early extinguishment of debt. The third quarter of 2018 and 2017 net income had a $2.5 million and $1.9 million loss on early extinguishment of debt, respectively. As a result of the Tax Act, the fourth quarter of 2017 net income includes a $93.0 million tax benefit related to a reduction of the Company's net deferred tax liability.
(3) | (Loss) earnings per share are computed independently for each of the quarters presented. Accordingly, the quarterly basic and diluted (loss) earnings per share may not equal the total computed for the year.

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