Annual report pursuant to Section 13 and 15(d)

Prepaid Expenses and Other Current Assets (Detail)

v3.21.1
Prepaid Expenses and Other Current Assets (Detail) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]    
Prepaid research and development services $ 1,535 $ 3,043
Prepaid insurance 362 252
Other prepaid expenses 19 19
Other receivable 2,876 0
Other current assets 373 674
Total prepaid expenses and other current assets $ 5,165 $ 3,988