Subsequent Event (Details) (USD $) In Millions, except Per Share data, unless otherwise specified		0 Months Ended
	Nov. 06, 2012	Oct. 22, 2013 Collaborative Arrangement [Member] Subsequent Event [Member] payment
Subsequent Event [Line Items]
Term of Agreement		3 years
Periodic Payments For Services Provided, Number		3
Periodic Payments for Services Provided, Amount		$ 8
Closing price of share	$ 1.69	$ 1.95