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Segment Information (Tables) | 9 Months Ended
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Sep. 30, 2017
Segment Reporting [Abstract] |
Reconciliation of Revenue from Segments to Consolidated | The following tables include reconciliations of segment information to consolidated amounts (in thousands):
| Successor |  |  |  |  | Predecessor
| For the three months ended September 30, |  | For the nine months ended September 30, |  | For the six months ended September 30, |  |  | For the three months ended March 31,
| 2017 |  | 2016 |  | 2017 |  | 2016 |  |  | 2016
Revenues |  |  |  |  |  |  |  |  |  |
Mining | $ | 302,958 |  |  | $ | 44,395 |  |  | $ | 895,802 |  |  | $ | 129,810 |  |  |  | $ | 65,154 |
All other | 8,997 |  |  | 8,496 |  |  | 33,487 |  |  | 14,555 |  |  |  | 6,229 |
Total revenues | $ | 311,955 |  |  | $ | 52,891 |  |  | $ | 929,289 |  |  | $ | 144,365 |  |  |  | $ | 71,383 |
Reconciliation of Capital Expenditures from Segments to Consolidated |
| Successor |  |  |  |  | Predecessor
| For the three months ended September 30, |  | For the nine months ended September 30, |  | For the six months ended September 30, |  |  | For the three months ended March 31,
| 2017 |  | 2016 |  | 2017 |  | 2016 |  |  | 2016
Capital Expenditures |  |  |  |  |  |  |  |  |  |
Mining | 34,125 |  |  | $ | 2,081 |  |  | $ | 60,647 |  |  | $ | 7,424 |  |  |  | $ | 4,588 |
All other | 283 |  |  | 354 |  |  | 2,024 |  |  | 1,025 |  |  |  | 834 |
Total capital expenditures | 34,408 |  |  | $ | 2,435 |  |  | $ | 62,671 |  |  | $ | 8,449 |  |  |  | $ | 5,422 |
Reconciliation of Net Income (Loss) from Segments to Consolidated | Below is a reconciliation of Segment Adjusted EBITDA to net income (loss), which is its most directly comparable financial measure calculated and presented in accordance with GAAP (in thousands):
| Successor |  |  |  |  | Predecessor
| For the three months ended September 30, |  | For the nine months ended September 30, |  | For the six months ended September 30, |  |  | For the three months ended March 31,
| 2017 |  | 2016 |  | 2017 |  | 2016 |  |  | 2016
Segment Adjusted EBITDA | $ | 113,394 |  |  | $ | (7,392 | ) |  | $ | 439,942 |  |  | $ | (25,843 | ) |  |  | $ | (7,143 | )
Other revenues | 8,997 |  |  | 8,496 |  |  | 33,487 |  |  | 14,555 |  |  |  | 6,229 |
Cost of other revenues | (6,985 | ) |  | (6,998 | ) |  | (22,959 | ) |  | (12,124 | ) |  |  | (4,698 | )
Depreciation and depletion | (23,393 | ) |  | (22,538 | ) |  | (57,625 | ) |  | (38,359 | ) |  |  | (28,958 | )
Selling, general and administrative | (9,243 | ) |  | (4,516 | ) |  | (23,073 | ) |  | (10,331 | ) |  |  | (9,008 | )
Other postretirement benefits | — |  |  | — |  |  | — |  |  | — |  |  |  | (6,160 | )
Restructuring charges | — |  |  | — |  |  | — |  |  | — |  |  |  | (3,418 | )
Transaction and other costs | — |  |  | — |  |  | (12,873 | ) |  | (10,475 | ) |  |  | — |
Interest expense, net | (640 | ) |  | (694 | ) |  | (1,890 | ) |  | (1,128 | ) |  |  | (16,562 | )
Reorganization items, net | — |  |  | — |  |  | — |  |  | — |  |  |  | 7,920 |
Income tax benefit (expense) | 37,587 |  |  | — |  |  | 2,881 |  |  | — |  |  |  | (18 | )
Net income (loss) | $ | 119,717 |  |  | $ | (33,642 | ) |  | $ | 357,890 |  |  | $ | (83,705 | ) |  |  | $ | (61,816 | )

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- Definition Tabular disclosure of the reconciliation of profit (loss) from reportable segments to the consolidated income (loss) before income tax expense (benefit) and discontinued operations. Includes, but is not limited to, reconciliation after income tax if income tax is allocated to the reportable segment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8924-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599 + Details
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- Definition Tabular disclosure of each significant reconciling item, other than profit (loss), revenues, or assets, in the reconciliation of totals of such items in reportable segments to the entity's corresponding consolidated amount. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8924-108599 + Details
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- Definition Tabular disclosure of all significant reconciling items in the reconciliation of total revenues from reportable segments to the entity's consolidated revenues. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8924-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599 + Details
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