Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Assets
Cash equivalents	$ 3,784,877	$ 1,744,965
Total assets measured at fair value on recurring basis	3,784,877	1,744,965
Level 1
Assets
Cash equivalents	3,784,877	1,744,965
Total assets measured at fair value on recurring basis	3,784,877	1,744,965
Level 2
Assets
Cash equivalents	0	0
Total assets measured at fair value on recurring basis	0	0
Level 3
Assets
Cash equivalents	0	0
Total assets measured at fair value on recurring basis	$ 0	$ 0