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v3.20.2

Nature of the business and basis of presentation- Liquidity (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Jun. 05, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Dec. 31, 2019
Net loss |  | $ 10,138 | $ 12,115 | $ 11,324 | $ 9,482 | $ 10,217 | $ 6,503 | $ 33,577 | $ 26,202 |
Accumulated deficit |  | 134,127 |  |  |  |  |  | $ 134,127 |  | $ 100,550
Offering expenses |  | 1,800 |  |  |  | $ 8,400 |  |  |  |
At the market offering |  |  |  |  |  |  |  |  |  |
Maximum aggregate offering price | $ 50,000 |  |  |  |  |  |  |  |  |
Shares issued (in shares) |  |  |  |  |  |  |  | 2,830,713 |  |
Gross proceeds before discounts and commissions |  |  |  |  |  |  |  | $ 48,100 |  |
Net proceeds |  |  |  |  |  |  |  | 46,300 |  |
Offering expenses |  |  |  |  |  |  |  | 1,800 |  |
Loan and Security Agreement | Term Loan |  |  |  |  |  |  |  |  |  |
Maximum borrowing |  | 40,000 |  |  |  |  |  | 40,000 |  |
Loan and Security Agreement | Initial Term Loan |  |  |  |  |  |  |  |  |  |
Term loan |  | 15,000 |  |  |  |  |  | 15,000 |  |
Loan and Security Agreement | Additional Term Loan One |  |  |  |  |  |  |  |  |  |
Term loan |  | 15,000 |  |  |  |  |  | 15,000 |  |
Loan and Security Agreement | Additional Term Loan Two |  |  |  |  |  |  |  |  |  |
Term loan |  | $ 10,000 |  |  |  |  |  | $ 10,000 |  |

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