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The Company and Basis of Presentation - Additional Information (Details) - USD ($) $ in Millions | Feb. 22, 2021 | Jun. 16, 2020 | Jun. 30, 2021
--- | --- | --- | ---
Follow-on Public Offering |  |  |
Significant Accounting Policies [Line Items] |  |  |
Proceeds from public offering, net of underwriting discounts and commissions | $ 181.6 | $ 45.8 |
Payments for underwriting discounts and commissions | 8.6 | 2.7 |
Deferred offering costs | $ 0.3 | $ 0.3 |
Si Time Corporation | Follow-on Public Offering |  |  |
Significant Accounting Policies [Line Items] |  |  |
Issuance of common stock upon follow-on public offering net of underwriting discounts and commissions and deferred offerings costs, Shares | 1,500,000 | 1,525,000 |
MegaChips | Follow-on Public Offering |  |  |
Significant Accounting Policies [Line Items] |  |  |
Issuance of common stock upon follow-on public offering net of underwriting discounts and commissions and deferred offerings costs, Shares | 1,500,000 | 2,500,000 |
MegaChips | Si Time Corporation |  |  |
Significant Accounting Policies [Line Items] |  |  |
Percentage of outstanding common stock held |  |  | 31.50%

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