Fair Value Measurements (Details) (USD $)	Sep. 30, 2014	Sep. 16, 2013	Sep. 30, 2014 Recurring	Dec. 31, 2013 Recurring	Sep. 30, 2014 Fair Value, Inputs, Level 1 Recurring	Dec. 31, 2013 Fair Value, Inputs, Level 1 Recurring	Sep. 30, 2014 Fair Value, Inputs, Level 2 Recurring	Dec. 31, 2013 Fair Value, Inputs, Level 2 Recurring	Sep. 30, 2014 Fair Value, Inputs, Level 3 Recurring	Dec. 31, 2013 Fair Value, Inputs, Level 3 Recurring	Sep. 30, 2014 Corporate debt and government securities Recurring	Dec. 31, 2013 Corporate debt and government securities Recurring	Sep. 30, 2014 Corporate debt and government securities Fair Value, Inputs, Level 1 Recurring	Dec. 31, 2013 Corporate debt and government securities Fair Value, Inputs, Level 1 Recurring	Sep. 30, 2014 Corporate debt and government securities Fair Value, Inputs, Level 2 Recurring	Dec. 31, 2013 Corporate debt and government securities Fair Value, Inputs, Level 2 Recurring	Sep. 30, 2014 Corporate debt and government securities Fair Value, Inputs, Level 3 Recurring	Dec. 31, 2013 Corporate debt and government securities Fair Value, Inputs, Level 3 Recurring	Sep. 30, 2014 Money market funds and commercial paper Recurring	Dec. 31, 2013 Money market funds and commercial paper Recurring	Sep. 30, 2014 Money market funds and commercial paper Fair Value, Inputs, Level 1 Recurring	Dec. 31, 2013 Money market funds and commercial paper Fair Value, Inputs, Level 1 Recurring	Sep. 30, 2014 Money market funds and commercial paper Fair Value, Inputs, Level 2 Recurring	Dec. 31, 2013 Money market funds and commercial paper Fair Value, Inputs, Level 2 Recurring	Sep. 30, 2014 Money market funds and commercial paper Fair Value, Inputs, Level 3 Recurring	Dec. 31, 2013 Money market funds and commercial paper Fair Value, Inputs, Level 3 Recurring	Sep. 30, 2014 Corporate debt and government securities Recurring	Sep. 30, 2014 Corporate debt and government securities Fair Value, Inputs, Level 1 Recurring	Sep. 30, 2014 Corporate debt and government securities Fair Value, Inputs, Level 2 Recurring	Sep. 30, 2014 Corporate debt and government securities Fair Value, Inputs, Level 3 Recurring
Cash equivalents:
Total cash equivalents			$ 5,448,897	$ 8,486,633	$ 4,905,462	$ 8,486,633	$ 543,435	$ 0	$ 0	$ 0									$ 4,905,462	$ 8,486,633	$ 4,905,462	$ 8,486,633	$ 0	$ 0	$ 0	$ 0	$ 543,435	$ 0	$ 543,435	$ 0
Marketable securities:
Total marketable securities			12,136,254	8,073,108	0	0	12,136,254	8,073,108	0	0	12,136,254	8,073,108	0	0	12,136,254	8,073,108	0	0
Derivative liabilities:
Derivative Instruments	178,197	170,337	178,197	159,134	0	0	0	0	178,197	159,134
Total derivative liabilities			178,197	159,134	0	0	0	0	178,197	159,134
Total assets and liabilities measured at fair value			$ 17,763,348	$ 16,718,875	$ 4,905,462	$ 8,486,633	$ 12,679,689	$ 8,073,108	$ 178,197	$ 159,134