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v3.22.1

Financings - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands |  |  |  |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Mar. 10, 2020 | Feb. 05, 2020 | Sep. 12, 2019 | Nov. 11, 2018 | Jun. 30, 2019 | Dec. 31, 2021 | Dec. 31, 2020 | Aug. 06, 2021
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Sale of stock consideration received on transaction |  |  |  |  |  | $ 0 | $ 88,661 |
Common stock, par value |  |  |  |  |  | $ 0.001 | $ 0.001 |
Issuance of common stock in connection with an at the market offering, net |  |  |  |  |  |  | $ 13,016 |
Proceeds from private placement |  |  | $ 52,500 |  |  |  |  |
At The Market Offering [Member] |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Stock issued during period |  |  |  |  |  |  | 2,814,673 |
At The Market Offering [Member] | Maximum [Member] |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Issuance of common stock in connection with an at the market offering, net |  |  |  |  | $ 100,000 |  |  |
Private Placement [Member] |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Number of securities into which the class of warrant converted |  |  | 17,803,031 | 18,939,394 |  |  |  |
Warrant exercise per share |  |  | $ 3.01 | $ 3.01 |  |  |  |
Placement agent fees and other expenses |  |  | $ 1,100 |  |  |  |  |
Private Placement [Member] | New Warrants [Member] |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Number of securities into which the class of warrant converted |  |  | 17,803,031 |  |  |  |  |
Warrant exercise per share |  |  | $ 7.00 |  |  |  |  |
Securities Purchase Agreement [Member] |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Issuance of common stock in connection with an at the market offering, net |  |  |  | $ 47,100 |  |  |  |
Underwriting Agreement [Member] |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Common stock issuance |  | 27,826,086 |  |  |  |  |  |
Issuance & sale of common stock in public offering price per share |  | $ 3.25 |  |  |  |  |  |
Sale of stock consideration received on transaction |  | $ 84,800 |  |  |  |  |  |
Underwriting Agreement [Member] | Stock Option [Member] |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Stock issued during period | 1,284,025 |  |  |  |  |  |  |
Sale of stock consideration received on transaction | $ 3,900 |  |  |  |  |  |  |
Underwriting Agreement [Member] | At The Market Offering [Member] |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Sale of stock consideration received on transaction |  |  |  |  |  |  | $ 13,000 |
Silicon Valley Bank [Member] | Term A Tranche |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Loan and Security Agreement |  |  |  |  |  |  |  | $ 25,000
Silicon Valley Bank [Member] | Term B Tranche |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |
Additonal tranche facility |  |  |  |  |  |  |  | $ 25,000

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