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Severance and Other Charges (Tables)
 6 Months Ended
Jun. 30, 2016
Restructuring and Related Activities [Abstract]  
Restructuring and Related Costs
Below is a reconciliation of the beginning and ending liability balance (in thousands):

 
International Services
 
U.S. Services
 
Tubular Sales
 
Total
Beginning balance, December 31, 2015
$
78

 
$
22,166

 
$
—

 
$
22,244

Additions for costs expensed
2,590

 
1,549

 
185

 
4,324

Other adjustments
—

 
(341
)
 
341

 
—

Severance and other payments
(2,167
)
 
(3,936
)
 
(526
)
 
(6,629
)
Ending balance, June 30, 2016
$
501

 
$
19,438

 
$
—

 
$
19,939