Prepaid Expense and Other (Details) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Prepaid Expenses and Other
Insurance premiums	$ 775,000	$ 164,000
Clinical trial deposit	713,000
Biologics License Application ("BLA") consulting services deposit	182,000	182,000
Director Fees	48,000
Annual service agreements	39,000	19,000
Lease deposit	34,000	34,000
Other	46,000	48,000
Total prepaid expenses and other	$ 1,836,770	$ 447,136