Accrued Expenses (Tables)

6 Months Ended

Jun. 30, 2020

Payables and Accruals [Abstract]

Schedule of Accrued Expenses

Accrued expenses consist of the following (in thousands):

	June 30,		December 31,
	2020		2019
Payroll and employee related expenses	$	2,112	$	2,235
Collaboration and licensing	1,350		1,050
Accrued patent fees	492		487
Accrued external research and development costs	4,247		4,379
Accrued professional and consulting services	763		468
Accrued interest	44		82
Issuance costs, December 2019 financing	—		4,381
Other	300		410
Accrued expenses	$	9,308	$	13,492