Accrued Expenses (Tables)

12 Months Ended

Dec. 31, 2021

Payables and Accruals [Abstract]

Component of Accrued Expenses

Accrued expenses consist of the following:

($ in thousands)	2021		2020
Clinical	$	1,677	$	4,450
Employee compensation		1,695		3,298
Professional services		825		3,993
Preclinical services		363		749
Manufacturing services		1,056		3,159
Accrued vacation		227		725
Payroll taxes and benefits		—		16
Other consulting services		66		199
Other		167		—
	$	6,076	$	16,589