Quarterly report pursuant to Section 13 or 15(d)

Prepaid Expenses and Other Current Assets (Detail)

v3.20.2
Prepaid Expenses and Other Current Assets (Detail) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]    
Prepaid research and development services $ 1,656 $ 3,043
Prepaid insurance 610 252
Other prepaid expenses 54 19
Other current assets 442 674
Total prepaid expenses and other current assets $ 2,762 $ 3,988