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Common Stock, Redeemable Common Stock, and Convertible Preferred Stock (converted to Common Stock) - Additional Information (Detail) |  | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | ---
Mar. 23, 2021 USD ($) $ / shares | Sep. 30, 2021 USD ($) vote $ / shares shares | Sep. 30, 2021 USD ($) vote $ / shares shares | Dec. 31, 2020 $ / shares | Nov. 29, 2019 $ / shares
Common stock and redeemable common stock details [Line Items] |  |  |  |  |
Common stock, par value (in usd per share) | $ / shares |  | $ 0.001 | $ 0.001 | $ 0.001 |
Common stock, authorized shares | shares |  | 125,000,000 | 125,000,000 |  |
Number of votes per share | vote |  | 1 | 1 |  |
Dividends on common stock declared or paid | $ |  |  | $ 0 |  |
Stock Issued During Period, Shares, New Issues | shares |  | 6,271,836 |  |  |
Class of warrant or right, warrants to purchase of common stock (in shares) | shares |  | 50,000 | 50,000 |  |
Sale of stock, price per share (in usd per share) | $ / shares | $ 8.70 |  |  |  |
Class of Warrant or Right, Additional Exercise Price of Warrants or Rights | $ / shares | $ 0.01 |  |  |  | $ 0.001
Deferred offering costs | $ | $ 3,500,000 |  |  |  |
Proceeds from issuance of common stock before underwriting discounts commissions and other expenses | $ | $ 55,000,000 |  |  |  |
Funded |  |  |  |  |
Common stock and redeemable common stock details [Line Items] |  |  |  |  |
Warrant exercise price (usd per share) | $ / shares | $ 8.69 |  |  |  |
Redeemable Common Stock |  |  |  |  |
Common stock and redeemable common stock details [Line Items] |  |  |  |  |
Proceeds from issuance of common stock before underwriting discounts commissions and other expenses | $ |  | $ 2,000,000 |  |  |

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