Summary of Significant Accounting Policies (Details Textual) (USD $)	3 Months Ended
	Mar. 31, 2013
Summary of Significant Accounting Policies (Textual) [Abstract]
Impairment of investments	$ 0
Based on these sales prices reduced inventory and increased cost of goods sold	139,000
Reduced inventory and increased costs of goods sold	209,000
Revenue recorded from Government contract	98,000
Period of contract	3 years
Total value of the contract	4,700,000
Value of contract recorded	$ 1,300,000