Subsequent Events (Details) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	1 Months Ended				1 Months Ended
	Aug. 31, 2013 Subsequent Event [Member] item	Aug. 07, 2013 Subsequent Event [Member] First Conversion Of Warrants [Member]	Aug. 07, 2013 Subsequent Event [Member] Second Conversion Of Warrants [Member]	May 31, 2012 Subordinated Convertible Debentures [Member]	Aug. 31, 2013 Subordinated Convertible Debentures [Member] Subsequent Event [Member]
Number of shares issued upon conversion of warrants	5.2	2.5	2.5
Exercise price of warrants		3.361	3.361	3.361
Combined price per share issued for Convertible notes	$ 3.0
Proceeds from Warrant Exercises	$ 8,475,000
Extinguishment of Debt, Amount					$ 8,100,000
Fraction of share for rights offering	0.25