ACCRUED LIABILITIES (Tables)

12 Months Ended

Dec. 31, 2019

Payables and Accruals [Abstract]

Components of Accrued Liabilities

Accrued liabilities consisted of the following:

	December 31,
	2019		2018
	(in thousands)
Accrued outsourced clinical trials and preclinical studies	$	2,259	$	1,129
Restructuring liability	1,515		—
Accrued employee compensation and related taxes	508		1,704
Accrued legal fees and expenses	284		376
Accrued other professional service fees	254		246
Value of liability-classified stock purchase warrants	100		82
Deferred and accrued facility lease obligations	66		124
Accrued equipment and lab materials	1		33
Other accrued liabilities	121		174
Total accrued liabilities	$	5,108	$	3,868