Fair Value Measurements (Details) - USD ($)	Jun. 30, 2016	Dec. 31, 2015
Carrying value
Fair value on a recurring basis
Cash equivalents (money market accounts)	$ 31,362,847	$ 41,032,351
Certificate of deposit (included in prepaid expenses and other current assets)	20,000	20,000
Total	31,382,847	41,052,351
Recurring | Fair Value Measurement | Level 1
Fair value on a recurring basis
Cash equivalents (money market accounts)	31,362,847	41,032,351
Certificate of deposit (included in prepaid expenses and other current assets)	20,000	20,000
Total	$ 31,382,847	$ 41,052,351