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Severance and Other Charges (Tables)
 3 Months Ended
Mar. 31, 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
581

 
25

 
—

 
606

Other adjustments
—

 
(328
)
 
341

 
13

Severance and other payments
(659
)
 
(2,064
)
 
(341
)
 
(3,064
)
Ending balance, March 31, 2016
$
—

 
$
19,799

 
$
—

 
$
19,799