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Segment Information - Reconciliation of Adjusted Earnings before Interest, Taxes, Depreciation, and Amortization from Segments to Consolidated (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]        
Interest income, net $ 753 $ 198 $ 1,151 $ 404
Income tax benefit 6,076 7,705 15,194 8,511
Depreciation and amortization (30,951) (28,283) (62,050) (57,733)
Gain (loss) on sale of assets (210) 279 1,262 1,049
Foreign currency gain (loss) 599 (4,170) 1,345 (4,211)
Net loss (25,950) (45,287) (52,613) (47,695)
Equity-based compensation expense 3,415 4,320 9,116 8,528
Merger and acquisition expense 10 0 459 0
Severance and other charges (299) 3,718 738 4,324
Unrealized and realized gains (losses) (1,088) 695 (1,696) (963)
Investigation-related matters 1,567 1,385 2,606 3,275
Operating segments        
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]        
Adjusted EBITDA 3,564 (12,288) 5,100 21,375
Operating segments | International Services        
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]        
Adjusted EBITDA 9,022 (4,159) 14,308 27,220
Operating segments | U.S. Services        
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]        
Adjusted EBITDA (9,238) (9,753) (16,453) (7,023)
Operating segments | Tubular Sales        
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]        
Adjusted EBITDA 815 1,624 3,069 1,178
Operating segments | Blackhawk        
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]        
Adjusted EBITDA 2,965 0 4,176 0
Segment Reconciling Items        
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]        
Interest income, net 753 198 1,151 404
Income tax benefit 6,076 7,705 15,194 8,511
Depreciation and amortization (30,951) (28,283) (62,050) (57,733)
Gain (loss) on sale of assets (210) 279 1,262 1,049
Foreign currency gain (loss) 599 (4,170) 1,345 (4,211)
Charges and credits (1) $ (5,781) $ (8,728) $ (14,615) $ (17,090)