ACCRUED LIABILITIES (Tables)

3 Months Ended

Mar. 31, 2020

Payables and Accruals [Abstract]

Components of Accrued Liabilities

Accrued liabilities consisted of the following:

	March 31, 2020		December 31, 2019
	(in thousands)
Accrued outsourced clinical trials and preclinical studies	$	1,012	$	2,259
Accrued employee compensation and related taxes	524		508
Restructuring liability	416		1,515
Accrued legal fees and expenses	323		284
Operating lease liability	306		—
Accrued other professional service fees	282		254
Value of liability-classified stock purchase warrants	100		100
Deferred and accrued facility lease obligations	—		66
Accrued equipment and lab materials	11		1
Other accrued liabilities	81		121
Total accrued liabilities	$	3,055	$	5,108