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Inventories (Tables)
12 Months Ended
Dec. 31, 2015
Inventories [Abstract]  
Schedule of Inventory, Current [Table Text Block]
 
 
December 31,
 
 
 
2015
 
2014
 
Raw materials and component parts
 
$
30,569
 
$
36,383
 
Finished goods
 
 
67,777
 
 
65,943
 
 
 
$
98,346
 
$
102,326