Nature of Operations (Details) (USD $)	3 Months Ended								12 Months Ended			0 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Apr. 02, 2014	Dec. 31, 2011
Description of Business
Net loss attributable to common shareholders	$ 7,183,000	$ 9,377,000	$ (3,825,000)	$ 75,909,000	$ 28,929,000	$ 15,948,000	$ 9,338,000	$ 8,576,000	$ 88,643,700	$ 62,790,800	$ 31,862,454
Cash and cash equivalents	146,205,071				5,026,523				146,205,071	5,026,523	9,380,059		13,856,893
Accumulated deficit	938,080,766				849,437,066				938,080,766	849,437,066
Net cash used in operating activities									40,779,534	26,880,811	20,164,996
Net working capital	$ 167,000,000				$ 11,100,000				$ 167,000,000	$ 11,100,000
ReliOn
Description of Business
Number of shares of common stock issued												530,504
Share price (in dollars per share)												$ 7.54