Fair Value Measurements (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Carrying value
Fair value on a recurring basis
Cash equivalents (money market accounts)	$ 30,485,212	$ 41,032,351
Certificate of deposit (included in prepaid expenses and other current assets)	20,000	20,000
Total	30,505,212	41,052,351
Recurring | Fair Value Measurement | Level 1
Fair value on a recurring basis
Cash equivalents (money market accounts)	30,485,212	41,032,351
Certificate of deposit (included in prepaid expenses and other current assets)	20,000	20,000
Total	$ 30,505,212	$ 41,052,351