Nature of Business (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2016 USD ($) Segment	Mar. 31, 2015 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Nature of Business (Textual)
Number of active business segments | Segment	2
Cash and cash equivalents	$ 4,260,440	$ 5,012,605	$ 4,921,545	$ 5,525,094
Net decrease in cash and cash equivalents	$ (661,105)	(512,489)
Percentage decrease in cash and cash equivalents	13.00%
Net cash used in operating activities	$ (637,839)	$ (1,506,110)
Working capital, carrying value	405,856		2,179,694
Non-cash warrant liability	1,673,944		2,434,101
Decrease in working capital			$ 1,773,838
Percentage of decrease in working capital			81.00%
Active grant funding available	40,300,000
Proceeds from net operating loss (NOL) sales			$ 488,933
November 2016 [Member]
Nature of Business (Textual)
Equity facility, available amount	$ 8,200,000
Equity facility, maturity date	Nov. 30, 2016
March 2019 [Member]
Nature of Business (Textual)
Equity facility, available amount	$ 12,000,000
Equity facility, maturity date	Mar. 31, 2016