Inventories and Deferred Costs of Goods Sold (Tables)
 12 Months Ended
Dec. 31, 2013
Inventories and Deferred Costs of Goods Sold [Abstract]  
Schedule of Inventories and Deferred Costs of Goods Sold
Inventories, net of $1,019 thousand and $860 thousand of reserves at December 31, 2013 and 2012, respectively, and deferred cost of goods sold consist of the following at December 31:

(in thousands)
2013
 
2012
 
Raw materials
$
1,310

 
$
1,784

Work in process
2,004

 
2,103

Finished goods
502

 
1,429

Net inventory
$
3,816

 
$
5,316

Deferred cost of goods sold
$
849

 
$
185