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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Subsequent Events - Additional Information (Detail) - USD ($)			12 Months Ended
	Mar. 29, 2022	Mar. 01, 2022	Dec. 31, 2021	Dec. 31, 2020
Subsequent Event [Line Items]
Outstanding stock options			7,056,035	4,453,357
Stock options, award vesting period			3 years	3 years
Stock options granted in period			3,368,635
Stock options exercise price			$ 1.43
Subsequent Event [Member] \| Nelson Employment Agreement [Member]
Subsequent Event [Line Items]
Minimum amount of base salary		$ 200,000
Cash bonus of base salary percentage		100.00%
Subsequent Event [Member] \| Nelson Employment Agreement [Member] \| Class A Common Stock [Member]
Subsequent Event [Line Items]
Stock options, award vesting period		3 years
Stock options granted in period		500,000
Stock options exercise price		$ 0.8060
Stock options will vest on effective date		125,000
Options vest ratably every three months over vesting period		375,000
Forecast [Member] \| Strategic Advisor [Member]
Subsequent Event [Line Items]
Outstanding stock options	624,659
Stock options, award vesting period	15 months