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Stockholders' Equity - Additional Information (Detail) |  |  |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended | 25 Months Ended |
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Apr. 06, 2022 USD ($) $ / shares shares | Oct. 18, 2021 USD ($) PrivatePlacement $ / shares shares | Oct. 05, 2021 USD ($) $ / shares shares | Jun. 18, 2021 shares | Jul. 31, 2022 USD ($) shares | May 31, 2022 USD ($) | Oct. 31, 2021 PrivatePlacement | Jun. 30, 2020 USD ($) | Jun. 30, 2022 $ / shares shares | Jun. 30, 2021 USD ($) shares | Jun. 30, 2022 USD ($) $ / shares shares | Jun. 30, 2021 USD ($) shares | Jun. 30, 2022 $ / shares shares | Dec. 31, 2021 $ / shares
Stockholders Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated commissions and allocated fees | $ |  |  |  |  |  |  |  |  |  |  | $ 34,000 | $ 89,000 |  |
Proceeds from sale of common stock and warrants under private placement, net of issuance costs | $ |  |  |  |  |  |  |  |  |  |  | $ 51,826,000 |  |  |
Common Stock, Par or Stated Value Per Share | $ / shares |  |  |  |  |  |  |  |  | $ 0.001 |  | $ 0.001 |  | $ 0.001 | $ 0.001
Proceeds from exercises of warrants | $ |  |  |  |  |  |  |  |  |  |  | $ 5,892,000 |  |  |
Warrant [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock, Par or Stated Value Per Share | $ / shares |  |  |  |  |  |  |  |  | $ 0.001 |  | $ 0.001 |  | $ 0.001 |
Private Placement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of private placements | PrivatePlacement |  |  |  |  |  |  | 2 |  |  |  |  |  |  |
Private Placement [Member] | Subsequent Events [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants to purchase aggregate shares of common stock |  |  |  |  | 3,000,000.0 |  |  |  |  |  |  |  |  |
Proceeds from exercises of warrants | $ |  |  |  |  | $ 4,100,000 |  |  |  |  |  |  |  |  |
Private Placement [Member] | Investor [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants to purchase aggregate shares of common stock |  |  | 9,852,138 |  |  |  |  |  |  |  |  |  |  |
Private Placement [Member] | New Enterprise Associates 16, L.P [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants to purchase aggregate shares of common stock |  | 3,703,704 |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of common stock and warrants under private placement, net of issuance costs | $ |  | $ 13,700,000 |  |  |  |  |  |  |  |  |  |  |  |
Number of private placements | PrivatePlacement |  | 2 |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of private placement net of issuance costs | $ |  | $ 1,100,000 |  |  |  |  |  |  |  |  |  |  |  |
Private Placement [Member] | Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of stock during the period |  |  |  |  |  |  |  |  | 4,580,526 |  | 4,580,526 |  |  |
Private Placement [Member] | Common Stock [Member] | Investor [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of stock during the period |  |  | 2,373,201 |  |  |  |  |  |  |  |  |  |  |
Warrants to purchase aggregate shares of common stock |  |  | 4,746,402 |  |  |  |  |  |  |  |  |  |  |
Private Placement [Member] | Common Stock [Member] | New Enterprise Associates 16, L.P [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of stock during the period |  | 1,851,852 |  |  |  |  |  |  |  |  |  |  |  |
Private Placement [Member] | Common Stock [Member] | Securities Purchase Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of stock during the period | 4,580,526 |  |  |  |  |  |  |  |  |  |  |  |  |
Combined price of each shares | $ / shares | $ 1.90 |  |  |  |  |  |  |  |  |  |  |  |  |
Private Placement [Member] | Pre-funded Warrants [Member] | Investor [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price per share of warrants | $ / shares |  |  | $ 0.001 |  |  |  |  |  |  |  |  |  |  |
Private Placement [Member] | Pre-funded Warrants [Member] | Securities Purchase Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Combined price of each shares | $ / shares | $ 1.899 |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of common stock and warrants under private placement, net of issuance costs | $ | $ 55,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price per share of warrants | $ / shares | $ 0.001 |  |  |  |  |  |  |  |  |  |  |  |  |
Private Placement [Member] | Common Stock and Accompanying Common Stock Warrants [Member] | Investor [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Combined price of each shares | $ / shares |  |  | 1.62 |  |  |  |  |  |  |  |  |  |  |
Private Placement [Member] | Common Stock and Accompanying Common Stock Warrants [Member] | New Enterprise Associates 16, L.P [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Combined price of each shares | $ / shares |  | $ 1.62 |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of common stock and warrants under private placement, net of issuance costs | $ |  | $ 3,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |
Private Placement [Member] | Pre-funded Warrant and Accompanying Common Stock Warrants [Member] | Investor [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Combined price of each shares | $ / shares |  |  | $ 1.619 |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of common stock and warrants under private placement, net of issuance costs | $ |  |  | $ 11,800,000 |  |  |  |  |  |  |  |  |  |  |
Private Placement [Member] | Common Stock Warrants | Investor [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants to purchase aggregate shares of common stock |  |  | 7,299,270 |  |  |  |  |  |  |  |  |  |  |
Exercise price per share of warrants | $ / shares |  |  | $ 1.37 |  |  |  |  |  |  |  |  |  |  |
Warrants expiration date |  |  | Apr. 05, 2025 |  |  |  |  |  |  |  |  |  |  |
Private Placement [Member] | Common Stock Warrants | New Enterprise Associates 16, L.P [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants to purchase aggregate shares of common stock |  | 1,851,852 |  |  |  |  |  |  |  |  |  |  |  |
Exercise price per share of warrants | $ / shares |  | $ 1.37 |  |  |  |  |  |  |  |  |  |  |  |
Warrants expiration date |  | Apr. 18, 2025 |  |  |  |  |  |  |  |  |  |  |  |
Private Placement [Member] | Warrant [Member] | Subsequent Events [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants to purchase aggregate shares of common stock |  |  |  |  | 3,000,000.0 |  |  |  |  |  |  |  |  |
Proceeds from exercises of warrants | $ |  |  |  |  | $ 4,100,000 |  |  |  |  |  |  |  |  |
Private Placement [Member] | Warrant [Member] | Investor [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants to purchase aggregate shares of common stock |  |  | 7,299,270 |  |  |  |  |  |  |  |  |  |  |
Warrants expiration date |  |  | Oct. 05, 2028 |  |  |  |  |  |  |  |  |  |  |
Private Placement [Member] | Warrant [Member] | New Enterprise Associates 16, L.P [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants to purchase aggregate shares of common stock |  | 1,851,852 |  |  |  |  |  |  |  |  |  |  |  |
Warrants expiration date |  | Oct. 18, 2028 |  |  |  |  |  |  |  |  |  |  |  |
Maximum [Member] | Private Placement [Member] | Pre-funded Warrants [Member] | Investor [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants to purchase aggregate shares of common stock |  |  | 4,926,069 |  |  |  |  |  |  |  |  |  |  |
Maximum [Member] | Private Placement [Member] | Pre-funded Warrants [Member] | Securities Purchase Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants to purchase aggregate shares of common stock | 24,379,673 |  |  |  |  |  |  |  |  |  |  |  |  |
ATM Sales Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate offering price of common stock which may issue and sell under agreement | $ |  |  |  |  |  | $ 50,000,000.0 |  | $ 12,000,000.0 |  |  | $ 62,000,000.0 |  |  |
Sale of stock during the period |  |  |  |  |  |  |  |  | 0 | 1,365,871 | 0 | 2,733,492 | 3,583,394 |
Proceeds from issuance of common stock | $ |  |  |  |  |  |  |  |  |  | $ 3,000,000.0 | $ 11,000,000.0 | $ 7,400,000 |  |
Estimated commissions and allocated fees | $ |  |  |  |  |  |  |  |  |  | $ 300,000 | $ 800,000 | $ 600,000 |  |
Common Stock Purchase Agreement [Member] | Lincoln Park Capital Fund, LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares agreed to be issued over period under equity line financing |  |  |  | 24 months |  |  |  |  |  |  |  |  |  |
Issuance of common stock to Lincoln Park Capital Fund (in shares) |  |  |  | 170,088 |  |  |  |  |  |  |  |  |  |
Common Stock Purchase Agreement [Member] | Lincoln Park Capital Fund, LLC [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares agreed to be issued under equity line financing |  |  |  | 15,000,000.0 |  |  |  |  |  |  |  |  |  |

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