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Reportable Segments - Reconciliation of Net Income to Gross Margin (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Reconciliation Net Income (Loss) to Gross Margin        
Total gross margin $ 96,130 $ 110,926 $ 188,186 $ 225,680
Less:        
Selling, general and administrative 25,162 27,646 52,715 62,297
Depreciation and amortization 47,248 51,896 95,020 105,823
Long-lived asset impairment 5,508 13,808 13,753 23,668
Restatement and other charges 1,920 434 2,721 434
Restructuring and other charges 366 3,004 823 11,069
Interest expense 22,504 21,177 43,925 41,477
Debt extinguishment costs 0 0 291 0
Other income, net (962) (181) (1,756) (2,170)
Loss before income taxes $ (5,616) $ (6,858) $ (19,306) $ (16,918)