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Prior Periods Financial Statement Revision - Schedule of Correction of Misstatements and Revision on Condensed Consolidated Statements of Cash Flow (Detail) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Accounting Changes And Error Corrections [Line Items] |  |
Net income (loss) | $ (5,983) | $ 7,411
Adjustments to reconcile net income to net cash provided by (used by) operating activities: |  |
Other | 347 | (207)
Changes in operating assets and liabilities: |  |
Income taxes payable (receivable) | (613) | 5,899
Other | 7,001 | (5,459)
Net cash provided by (used by) operating activities | (974) | 4,941
Other | (282) | 295
Net cash provided by (used by) investing activities | $ (32,818) | (8,270)
As Previously Reported [Member] |  |
Accounting Changes And Error Corrections [Line Items] |  |
Net income (loss) |  | 7,407
Adjustments to reconcile net income to net cash provided by (used by) operating activities: |  |
Depreciation and amortization |  | 15,568
Total derivative mark-to-market gains, net of cash settlements |  | (88)
Changes in operating assets and liabilities: |  |
Other |  | 605
Net cash provided by (used by) operating activities |  | 5,209
Proceeds from disposals of property, plant and equipment |  | 27
Net cash provided by (used by) investing activities |  | (8,538)
Adjustment [Member] |  |
Accounting Changes And Error Corrections [Line Items] |  |
Net income (loss) |  | 4
Adjustments to reconcile net income to net cash provided by (used by) operating activities: |  |
Depreciation and amortization |  | 12
Other |  | (268)
Changes in operating assets and liabilities: |  |
Other |  | (16)
Net cash provided by (used by) operating activities |  | (268)
Other |  | 268
Net cash provided by (used by) investing activities |  | 268
Reclasses [Member] |  |
Adjustments to reconcile net income to net cash provided by (used by) operating activities: |  |
Total derivative mark-to-market gains, net of cash settlements |  | 88
Other |  | 61
Changes in operating assets and liabilities: |  |
Income taxes payable (receivable) |  | 5,899
Other |  | (6,048)
Proceeds from disposals of property, plant and equipment |  | (27)
Other |  | 27
Continuing Operations As Revised [Member] |  |
Accounting Changes And Error Corrections [Line Items] |  |
Net income (loss) |  | 7,411
Adjustments to reconcile net income to net cash provided by (used by) operating activities: |  |
Depreciation and amortization |  | 15,580
Other |  | (207)
Changes in operating assets and liabilities: |  |
Income taxes payable (receivable) |  | 5,899
Other |  | (5,459)
Net cash provided by (used by) operating activities |  | 4,941
Other |  | 295
Net cash provided by (used by) investing activities |  | $ (8,270)

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