Leases - Additional Information (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018	Jan. 01, 2019
Lessee Lease Description [Line Items]
Right of use assets recognized for leases	$ 3,884,803
Lease liabilities	$ 4,215,115
Effective date	Jan. 01, 2019
Remaining lease term	12 months or less
Lease option to extend	up to an additional five years
Lessee, operating lease, discount rate	9.75%
Recognized lease expenses	$ 199,654	$ 122,818
Total lease expense, in accordance with superseded lease standard			$ 496,055
Minimum
Lessee Lease Description [Line Items]
Lease, Term of contract	3 years
Maximum
Lessee Lease Description [Line Items]
Lease, Term of contract	5 years
Lessee, operating lease, extension term	5 years
Building
Lessee Lease Description [Line Items]
Right of use assets recognized for leases				$ 3,900,000