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GOODWILL (Tables)
 3 Months Ended
Mar. 31, 2013
GOODWILL DISCLOSURE ABSTRACT  
Schedule of changes to the carrying amount of 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