Leases - Summary of Operating Leases (Details)	3 Months Ended	6 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)
Leases
Operating lease cost	$ 554,921	$ 1,089,888
Variable lease cost	78,237	168,081
Operating lease expense	633,158	1,257,969
Short-term lease rent expense	4,122	8,313
Total rent expense	637,280	1,266,282
Operating cash flows from operating leases	514,116	1,038,081
Right of use assets exchanged for operating lease liabilities	$ 821,195	$ 4,305,428
Weighted-average remaining lease term – operating leases	2 years 7 months 6 days	2 years 7 months 6 days
Weighted-average discount rate – operating leases	6.80%	6.80%