XML 87 R75.htm IDEA: XBRL DOCUMENT v3.8.0.1
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)