Annual report pursuant to Section 13 and 15(d)

Accrued Expenses - Summary of Accrued Expenses (Details)

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Accrued Expenses - Summary of Accrued Expenses (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Payables And Accruals [Abstract]    
Payroll and related costs $ 2,181 $ 2,172
Professional and consulting fees 209 671
Clinical trial and related costs   683
Property plant and equipment   278
Pre-commercialization scale-up costs   4,445
Other research and development costs 538 678
Guarantee liability 548  
Other 56 846
Total accrued expenses $ 3,532 $ 9,773