Shareholders' Equity Equity Issuances (Details) - Equity Component [Domain] - USD ($)	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	May. 01, 2015	Dec. 31, 2014	May. 08, 2014
Class of Stock [Line Items]
Common Stock, Shares, Issued	55,453,014			36,783,857	5,329,593
Net proceeds from issuance of common stock	$ 36,136,414	$ 10,149,438
Common Stock [Member]
Class of Stock [Line Items]
Stock Issued During Period, Shares, Other	12,500,000
Fair Value Inputs, Offered Quotes	$ 2.00
Net proceeds from issuance of common stock	$ 28,800,000
Aspire Capital Purchase Agreement [Member]
Class of Stock [Line Items]
Term of agreement in months	24 months	24 months
Discount Applied To Weighted Average Price		5.00%
Purchase Commitment, Remaining Minimum Amount Committed	$ 9,700,000
Stock Issued During Period, Shares, Other	7,990,123	5,687,942
Stock Issued During Period, Shares, New Issues	3,000,000
Net proceeds from issuance of common stock	$ 9,400,000
Over-Allotment Option [Member]
Class of Stock [Line Items]
Stock Issued During Period, Shares, Other	1,875,000
Aspire Capital Purchase Agreement [Member]
Class of Stock [Line Items]
Common Stock, Shares, Issued	364,837	150,000
Purchase Commitment, Remaining Minimum Amount Committed		$ 30,000,000	$ 30,000,000
Common Stock, Capital Shares Reserved for Future Issuance		600,000