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Note 6 - Accrued Expenses - Schedule of Accrued Expenses (Details) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Project expenses $ 6,583 $ 10,038
Compensation and benefits 989 1,556
Other 255 96
Total accrued expenses $ 7,827 $ 11,690