Other Financial Information (Tables)

12 Months Ended

Dec. 31, 2021

Quarterly Financial Information Disclosure [Abstract]

Schedule of prepaid expenses

	2021		2020
Software	$	157	$	75
Prepaid supplies		—		263
Other		287		121
Total prepaid expenses	$	444	$	459

Schedule of accrued liabilities

	2021		2020
Accrued wages and benefits	$	329	$	199
Other accrued expenses		73		49
Total accrued and other liabilities	$	402	$	248