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Inventories (Tables)
9 Months Ended
Sep. 30, 2013
Inventories [Abstract]  
Schedule of Inventories
(In thousands)   September 30,
2013
    December 31,
2012
 
             
Raw materials and component parts   $ 35,795     $ 47,732  
Finished goods     74,689       94,882  
                 
    $ 110,484     $ 142,614