Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2020

Payables and Accruals [Abstract]

Schedule of accrued liabilities

	Year Ended December 31,
	2020		2019
	(in thousands)
Accrued bonus	$	702	$	1,955
Accrued salary and other employee liabilities		625		428
Accrued accounts payable		968		6,210
Accrued cash interest and unfunded fees		1,068		—
Other accrued liabilities		198		136
	$	3,561	$	8,729