Fair Value Measurements (Narrative) (Details) (Warrants [Member])	3 Months Ended
	Sep. 30, 2014	Sep. 30, 2014 Derivative Liabilities [Member]	Sep. 30, 2014 Fair Value, Inputs, Level 3 [Member] Derivative Liabilities [Member]	Dec. 31, 2013 Fair Value, Inputs, Level 3 [Member] Derivative Liabilities [Member]
Fair Value Measurements [Line Items]
Number of common shares exercised underlying stock purchase warrants	419,218	419,218
Number of common shares expired underlying stock purchase warrants	705,354	705,354
Warrants to purchase common stock			1,775,419	2,899,991