Accrued Expenses and Other Current Liabilities (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Accrued Expenses and Other Current Liabilities
Research and development	$ 7,758,043	$ 8,209,594
Accrued compensation	455,176	2,056,356
Other	1,126,502	683,178
Total	$ 9,339,721	$ 10,949,128

Carrying value as of the balance sheet date of obligations incurred through that date and payable for research and development. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Amount of liabilities incurred to vendors for goods and services received, and accrued liabilities classified as other, payable within one year or the normal operating cycle, if longer.

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Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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