Inventories and Deferred Costs of Goods Sold (Tables)
 9 Months Ended
Sep. 30, 2014
Inventories and Deferred Costs of Goods Sold [Abstract]  
Schedule of Inventories and Deferred Costs of Goods Sold [Table Text Block]
Inventories, net of $1.0 million of reserves at both September 30, 2014 and December 31, 2013, and deferred cost of goods sold consist of the following at: 
(in thousands)
September 30,
2014
 
December 31,
2013
Raw materials
$
1,108

 
$
1,310

Work in process
2,861

 
2,004

Finished goods
948

 
502

Net inventory
$
4,917

 
$
3,816

Deferred cost of goods sold
$
305

 
$
849