Income Taxes - Summary of US Net Operating Losses Expire (Details) $ in Thousands	Dec. 31, 2020 USD ($)
Domestic Tax Authority \| California
Operating Loss Carryforwards [Line Items]
US net operating losses subject to expire	$ 742

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards that are subject to expiration dates.

No definition available.

Name:	us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant