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Inventories (Notes)
12 Months Ended
Dec. 31, 2013
Inventory Disclosure [Abstract]  
Inventory Disclosure [Text Block]
Inventories
The following table summarizes the components of inventory:
 
December 31,
 
2013
 
2012
Raw materials and supplies
$
93,014

 
$
85,726

Work in process
42,996

 
40,945

Finished goods
76,994

 
69,830

Total inventories, net
$
213,004

 
$
196,501


The allowance for excess and obsolete inventory balance at December 31, 2013 and 2012 was 6,556 and 4,078, respectively.