Accrued Liabilities

6 Months Ended

Jun. 30, 2021

Accrued Liabilities Current [Abstract]

Accrued Liabilities

5. Accrued Liabilities

Accrued liabilities consisted of the following:

	June 30,		December 31,
	2021		2020
	(in thousands)
Research and clinical expenses	$	7,099	$	10,092
Payroll and related expenses		5,797		8,362
Legal and professional expenses		2,029		815
Operating lease liabilities - short term		3,402		3,195
Other accrued expenses		926		595
Total	$	19,253	$	23,059