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Accrued Expenses (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2023
USD ($)
person
Dec. 31, 2022
USD ($)
Accrued Expenses    
Payroll and related costs $ 339 $ 1,886
Clinical and nonclinical trial expenses 1,576 2,106
Professional and consulting fees 1,041 1,637
Restructuring and other costs (1) 2,882 2,327
Acquisition-related costs 1,144 1,666
Other 216 289
Total accrued expenses 7,198 $ 9,911
Salary continuation severance benefits $ 1,300  
Number of former executives | person 2