Accrued Liabilities (Details) - USD ($)	Sep. 30, 2015	Dec. 31, 2014
Accrued Liabilities
Employee bonuses	$ 640,108	$ 665,050
Accrued clinical trial costs	1,518,699	254,333
Other	189,350	142,730
Total accrued liabilities	$ 2,348,157	$ 1,062,113