Accrued Expenses and Other Current Liabilities
 3 Months Ended
Mar. 31, 2021
Payables and Accruals [Abstract]  
Accrued Expenses and Other Current Liabilities Accrued Expenses and Other Current LiabilitiesThe 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