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The Company and Summary of Significant Accounting Policies - Summary of Outstanding Warrants (Details) - $ / shares | Jun. 30, 2021 | Feb. 28, 2021
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Class Of Warrant Or Right [Line Items] |  |
Exercise Price | $ 2.40 | $ 2.40
Common Stock Warrants One |  |
Class Of Warrant Or Right [Line Items] |  |
Number of Shares | 33 |
Exercise Price | $ 47.00 |
Expiration | Jan. 30, 2023 |
Common Stock Warrants Two |  |
Class Of Warrant Or Right [Line Items] |  |
Number of Shares | 106 |
Exercise Price | $ 2.40 |
Expiration | Oct. 30, 2023 |

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