Fair Value Measurements (Narrative) (Details) (USD $)				1 Months Ended						0 Months Ended	9 Months Ended
	Sep. 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]	Sep. 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]	Sep. 30, 2014 Exchange Warrants [Member]	Sep. 30, 2014 PIPE Warrants [Member]
Fair Value Measurements [Line Items]
Cash equivalents invested in money market funds	$ 7,747,863	$ 11,995,481				$ 7,747,863	$ 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
Warrant expiration date											Nov. 01, 2018	May 01, 2018
Volatility rate										111.00%	153.39%	162.85%
Risk-free interest rate										1.46%	1.78%	1.78%
Closing stock price										$ 8.69	$ 2.32	$ 2.32
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