Shareholders' Equity (Details) (USD $)	0 Months Ended	9 Months Ended		294 Months Ended
	Aug. 16, 2013	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013
Shareholders' Equity
Net proceeds from issuance of common stock and warrants	$ 8,169,000	$ 12,848,000	$ 346,000	$ 197,902,000
Fair market value of the warrants		5,874,000
Common Stock [Member]
Shareholders' Equity
Shares of common stock sold	30,000,000
Common stock issued to the underwriter pursuant to the exercise of its over-allotment option (in shares)	1,000,000
Public offering price (in dollars per share)	$ 0.30
Warrant [Member]
Shareholders' Equity
Warrants sold (in shares)	30,000,000
Warrants issued to the underwriter pursuant to the exercise of its over-allotment option	1,000,000
Fair market value of the warrants	$ 5,874,000
Public offering price per share (in dollars per share)	$ 0.30