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Summary of Significant Accounting Policies Inventories (Tables)
 12 Months Ended
Dec. 31, 2013
Inventories [Abstract]  
Schedule of Inventory, Current [Table Text Block]
Inventories consist of the following (in thousands):

 
December 31,
2013
 
December 31,
2012
 
 
 
 
Purchased materials
$
1,343

 
$
2,081

Finished goods
5,102

 
9,648

 
$
6,445

 
$
11,729