Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2021

Accrued Liabilites [Abstract]

Schedule of accrued liabilities

	Year Ended December 31,
	2021		2020
	(in thousands)
Accrued salary and other employee liabilities	$	2,423	$	1,327
Accrued legal and professional services		1,540		968
Accrued cash interest and unfunded fees		—		1,068
Other accrued liabilities		637		198
Total	$	4,600	$	3,561