Summary of Significant Accounting Policies (Details) (USD $)	1 Months Ended	3 Months Ended
	Dec. 28, 2012	Mar. 31, 2013	Apr. 30, 2013	Dec. 31, 2012
Summary of significant accounting policies (Textual) [Abstract]
Reverse Stock split of the Company's common stock	0.083
Accumulated deficit		$ 227,312,000		$ 225,432,000
Cash, and restricted cash		4,582,000	8,747,000
Period of inspection of product		30 days
Percentage payment on gross margin of distributor's, sales		20.00%
Cost of goods sold		$ 0