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Inventories (Tables)
 6 Months Ended
Jun. 30, 2014
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current [Table Text Block]

 

June 30,

2014

 

December 31,

2013

 

 

Raw materials

$

3,191

 

$

2,782

Work in process

 

1,093

 

 

1,039

Finished goods

 

2,392

 

 

2,098

Inventories 

$

 6,676

 

$

5,919