Net Loss Per Common Share (Reconciliation of Net Loss Per Share) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Numerator:
Net loss	$ (3,865,324)	$ (2,193,201)	$ (2,854,784)	$ (4,051,395)	$ (5,926,737)	$ (4,307,358)	$ (1,509,446)	$ 1,289,114	$ (12,964,704)	$ (10,454,427)	$ (9,638,773)
Preferred stock dividends									0	(5,452,445)	(3,672,785)
NET LOSS AVAILABLE TO COMMON SHAREHOLDERS	$ (3,865,324)	$ (2,193,201)	$ (2,854,784)	$ (4,051,395)	$ (5,870,298)	$ (7,952,246)	$ (2,474,610)	$ 390,282	$ (12,964,704)	$ (15,906,872)	$ (13,311,558)
Denominator:
Basic weighted average shares outstanding									176,624,733	110,072,486	78,586,266
Effect of dilutive securities (in shares)									0	0	0
Diluted weighted average shares outstanding									176,624,733	110,072,486	78,586,266
Net loss per common share:
Basic (in usd per share)	$ (0.02)	$ (0.01)	$ (0.02)	$ (0.02)	$ (0.05)	$ (0.07)	$ (0.03)	$ 0.01	$ (0.07)	$ (0.14)	$ (0.17)
Diluted (in usd per share)	$ (0.02)	$ (0.01)	$ (0.02)	$ (0.02)	$ (0.05)	$ (0.07)	$ (0.03)	$ 0.01	$ (0.07)	$ (0.14)	$ (0.17)