Shareholders' Equity - Summary of Warranty Liability Activity (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Class of Warrant or Right [Roll Forward]
Beginning Balance	$ 597,719	$ 1,064,810	$ 2,852,880
Issuance of warrants and effect of repricing	4,286,314	62,683	0
Exercise of warrants	0	0	(1,145,659)
(Gain) or loss included in earnings	(2,925,258)	(529,774)	(642,411)
Transfers in and/or out of Level 3	0	0	0
Ending Balance	$ 1,958,775	$ 597,719	$ 1,064,810