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Inventories (Tables)
9 Months Ended
Sep. 30, 2013
Inventory Disclosure [Abstract]  
Inventories
   

September 30,

2013

   

December 31,

2012

 
    (Thousands)  
Raw materials   $ 6     $ 13  
Finished goods     6,845       6,892  
Less allowance for excess and obsolete inventory           (476)             (631)  
Inventories, net   $ 6,375     $ 6,274