Fair Value Measurements (Narrative) (Details) (USD $)				1 Months Ended							6 Months Ended	0 Months Ended	6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Dec. 31, 2013 Warrants Issued December 29, 2008 [Member]	May 31, 2012 Common Stock Closes Above $15.00 [Member]	May 31, 2012 Common Stock Closes Above $20.00 [Member]	Jun. 30, 2014 Fair Value, Inputs, Level 1 [Member]	Dec. 31, 2013 Fair Value, Inputs, Level 1 [Member]	Dec. 29, 2008 Fair Value, Inputs, Level 3 [Member]	Dec. 31, 2013 Fair Value, Inputs, Level 3 [Member] Warrants Issued December 29, 2008 [Member]	Aug. 07, 2013 Exchange Warrants [Member]	Jun. 30, 2014 Exchange Warrants [Member] Black-Scholes Model Used to Value Warrants [Member]	Aug. 07, 2013 Exchange Warrants [Member] Monte-Carlo Simulation Used To Value Derivative Assets And Liabilities [Member]	Jun. 30, 2014 PIPE Warrants [Member] Black-Scholes Model Used to Value Warrants [Member]
Fair Value Measurements [Line Items]
Cash equivalents invested in money market funds	$ 7,313,366	$ 11,995,481				$ 7,313,366	$ 11,995,481
Issued warrants to purchase shares of common stock	2,197,883							179,241		2,500,000
Fair value of warrants issued			16,863						16,863
Volatility rate											150.16%	111.00%	157.74%
Risk-free interest rate											1.62%	1.46%	1.62%
Closing stock price											$ 3.55	$ 8.69	$ 3.55
Mandatory conversion percentage per Debentures agreement				50.00%	100.00%
Share price which determines conversion per Debentures agreement				15.00	20.00
Number of consecutive trading days required at stock price				20 days	20 days
Mandatory conversion minimum per Debentures agreement				$ 2,500,000	$ 2,500,000