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Severance and Other Charges (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2015
USD ($)
employee
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Restructuring Cost and Reserve [Line Items]      
Number of positions eliminated | employee 800    
Restructuring Reserve [Roll Forward]      
Beginning balance, December 31, 2014 $ 0    
Additions for costs expensed 35,484 $ 0 $ 0
Other adjustments (40)    
Severance and other payments (10,917)    
Reclass to equity for acceleration of RSU awards (2,283)    
Ending balance, December 31, 2015 22,244 0  
International Services      
Restructuring Reserve [Roll Forward]      
Beginning balance, December 31, 2014 0    
Additions for costs expensed 1,500    
Other adjustments 0    
Severance and other payments (1,422)    
Reclass to equity for acceleration of RSU awards 0    
Ending balance, December 31, 2015 78 0  
U.S. Services      
Restructuring Reserve [Roll Forward]      
Beginning balance, December 31, 2014 0    
Additions for costs expensed 32,838    
Other adjustments (87)    
Severance and other payments (8,302)    
Reclass to equity for acceleration of RSU awards (2,283)    
Ending balance, December 31, 2015 22,166 0  
Tubular Sales      
Restructuring Reserve [Roll Forward]      
Beginning balance, December 31, 2014 0    
Additions for costs expensed 1,146    
Other adjustments 47    
Severance and other payments (1,193)    
Reclass to equity for acceleration of RSU awards 0    
Ending balance, December 31, 2015 $ 0 $ 0