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Inventories (Tables)
3 Months Ended
Mar. 31, 2014
Inventories [Abstract]  
Schedule of Inventories
(In thousands)   March 31,     December 31,  
    2014     2013  
             
Raw materials and component parts   $ 38,034     $ 47,800  
Finished goods     79,923       69,547  
                 
    $ 117,957     $ 117,347