Accrued Liabilities - Summary of Accrued Liabilities (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Payables And Accruals [Abstract]
Accrued employee bonuses	$ 156,573	$ 900,740
Payroll and employee benefit accruals	401,252	469,530
Accrued professional fees	156,835	43,850
Accrued interest	264,301	245,350
Other accrued liabilities	216,866	210,826
Total accrued liabilities	$ 1,195,827	$ 1,870,296