U.S. Department of Defense ("DoD") Expense Reimburesement Grant (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | |
---|---|---|---|
Sep. 30, 2020 |
Sep. 30, 2020 |
Dec. 31, 2019 |
|
Unusual or Infrequent Item, or Both [Line Items] | |||
Prepaid expenses and other current assets | $ 739 | $ 739 | $ 579 |
Other Transaction Authority for Prototype Agreement | |||
Unusual or Infrequent Item, or Both [Line Items] | |||
Grants Receivable | 13,300 | 13,300 | |
Contra-research and development expense | 600 | 600 | |
Prepaid expenses and other current assets | $ 300 | $ 300 |