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GOODWILL
 3 Months Ended
Mar. 31, 2013
GOODWILL DISCLOSURE ABSTRACT  
GOODWILL
GOODWILL
 
The changes to the carrying amount of goodwill during the period are summarized below:
 
 
Explosive
Metalworking
 
Oilfield
Products
 
Total
Goodwill balance at December 31, 2012
$
21,734

 
$
15,697

 
$
37,431

Adjustment due to recognition of tax benefit of tax amortization of certain goodwill
(83
)
 
(125
)
 
(208
)
Adjustment due to exchange rate differences
(628
)
 
(470
)
 
(1,098
)
 
 
 
 
 
 
Goodwill balance at March 31, 2013
$
21,023

 
$
15,102

 
$
36,125