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Segment Information - EBITDA Reconciliation (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]    
Adjusted EBITDA $ 1,536 $ 33,663
Interest income, net 398 206
Income tax benefit 9,118 806
Depreciation and amortization (31,099) (29,450)
Gain on sale of assets 1,472 770
Foreign currency gain (loss) 746 (41)
Charges and credits (1) (8,834) (8,362)
Net loss (26,663) (2,408)
Equity-based compensation expense 5,701 4,208
Merger and acquisition expense 449 0
Severance and other charges 1,037 606
Unrealized and realized gains (losses) (608) (1,658)
Investigation-related matters 1,039 1,890
International Services    
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]    
Severance and other charges 270  
U.S. Services    
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]    
Severance and other charges 767  
Operating segments | International Services    
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]    
Adjusted EBITDA 5,286 31,379
Operating segments | U.S. Services    
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]    
Adjusted EBITDA (7,215) 2,730
Operating segments | Tubular Sales    
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]    
Adjusted EBITDA 2,254 (446)
Operating segments | Blackhawk    
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]    
Adjusted EBITDA $ 1,211 $ 0