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Accrued Expenses (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Payables and Accruals [Abstract]    
Employee compensation and benefits $ 39 $ 452
Leased facilities 81 71
Professional services 264 264
Field trials and related expenses 273 97
Other 269 252
Total accrued expenses $ 926 $ 1,136