Nature of Business (Details) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2014 Grant Segments	Mar. 31, 2013	Dec. 31, 2013	Dec. 31, 2012
Nature of Business (Textual)
Number of active business segments	2
Number of grants	3
Cash and cash equivalents	$ 5,606,850	$ 2,612,021	$ 5,856,242	$ 3,356,380
Net decrease in cash and cash equivalents	(249,392)	(744,359)
Percentage decrease in cash and cash equivalents	4.00%
Working capital, carrying value	4,800,878		5,855,046
Non-cash warrant liability	9,521,312		8,281,247
Decrease in working capital	1,054,168
Percentage of decrease in working capital	18.00%
Active grant funding available			32,300,000
Proceeds from net operating losses	750,356
Equity facility, face amount	10,000,000
Equity facility, available amount	$ 9,800,000
Equity facility, maturity date	Oct. 31, 2016