Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Prepaid Expenses Deposits And Other Current Assets
Advanced payments to service providers and suppliers	$ 582	$ 599
Prepaid insurance	233	300
Deposits	3,530	3,005
EsoCheck cell collection supplies	27	59
EsoGuard mailer supplies	35	52
Veris Box supplies	127	150
Total prepaid expenses, deposits and other current assets	$ 4,534	$ 4,165