Revenues from sales to customers located outside the U.S. (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Revenues from sales to customers located outside the U.S.
Canada, Mexico & South/Central America	$ 4,500	$ 5,759
Pacific Rim	5,813	7,073
Europe, Africa & Middle East	10,191	16,628
Total Sales	$ 20,504	$ 29,460
Percentage of foreign sales by customers from Germany	20.00%	20.00%
Percentage of foreign sales by customers from U.K.	33.00%	33.00%