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Segment Information - Revenue from External Customers (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Revenue from External Customer [Line Items]    
Total revenue $ 153,486 $ 277,437
Adjusted EBITDA 31,669 100,290
Operating segments | International Services    
Revenue from External Customer [Line Items]    
Total revenue 83,063 124,201
Adjusted EBITDA 31,379 52,285
Operating segments | U.S. Services    
Revenue from External Customer [Line Items]    
Total revenue 48,779 109,286
Adjusted EBITDA 715 44,893
Operating segments | Tubular Sales    
Revenue from External Customer [Line Items]    
Total revenue 21,644 43,950
Adjusted EBITDA (446) 3,119
Inter-segment    
Revenue from External Customer [Line Items]    
Total revenue 0 0
Inter-segment | International Services    
Revenue from External Customer [Line Items]    
Total revenue 17 377
Inter-segment | U.S. Services    
Revenue from External Customer [Line Items]    
Total revenue 4,110 7,914
Inter-segment | Tubular Sales    
Revenue from External Customer [Line Items]    
Total revenue 5,665 11,891
Inter-segment | Corporate and other    
Revenue from External Customer [Line Items]    
Total revenue (9,792) (20,182)
Corporate, non-segment | Corporate and other    
Revenue from External Customer [Line Items]    
Total revenue 0 0
Adjusted EBITDA $ 21 $ (7)