Inventories (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Classification of inventories [Abstract]
Raw materials, net	$ 1,872,000	$ 1,834,000
Work in process, net	1,465,000	1,490,000
Finished goods, net	1,042,000	1,305,000
Total Inventories, net	4,379,000	4,629,000
Inventory Reserve for Obsolescence	$ 2,699,000	$ 2,586,000