Accrued Liabilities

6 Months Ended

Jun. 30, 2020

Payables And Accruals [Abstract]

Accrued Liabilities

5. Accrued Liabilities

Accrued liabilities consist of the following:

	June 30, 2020		December 31, 2019
	(In thousands)
Accrued payroll and related expenses	$	509	$	1,643
Accrued restructuring costs (See Note 13)		—		516
Accrued research and development expenses		230		3,171
Other		358		153
Total accrued liabilities	$	1,097	$	5,483