Warrants (Additional Information) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	1 Months Ended	9 Months Ended
	Jun. 19, 2014	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Common Stock, Shares, Outstanding		93,175,380		84,502,653
Common stock, par value		$ 0.01		$ 0.01
Proceeds From Warrant Exercises	$ 10,027	$ 11,292	$ 566
Investment Warrants Expiration Date	Jun. 21, 2015
June 2014 Warrants [Member]
Exercise Price	$ 5.06
Warrants Issued	5,412,366
Common stock, par value	$ 0.01
Warrant [Member]
Common Stock, Shares, Outstanding	5,697,227
Exercise Price	$ 1.76