Accrued Expenses and Other Current Liabilities (Tables)
 3 Months Ended
Mar. 31, 2021
Payables and Accruals [Abstract]  
Schedule of Composition of Accrued Expenses The following table presents the composition of accrued expenses and other current liabilities as of March 31, 2021 and December 31, 2020 (in thousands):
As of March 31,
2021		As of December 31,
2020
Accrued clinical and related costs$2,967 $2,753 
Accrued compensation and related costs1,223 2,260 
Accrued interest61 69 
Operating lease liability, short-term468 459 
Accrued other681 390 
Accrued expenses and other current liabilities$5,400 $5,931