Related Party Transactions - Additional Information (Details)	Mar. 31, 2021	Dec. 31, 2020
MegaChips \| Si Time Corporation
Related Party Transaction [Line Items]
Percentage of outstanding common stock held	31.80%	43.70%

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration