Common Stock, Redeemable Common Stock, and Convertible Preferred Stock (converted to Common Stock) - Additional Information (Detail)		3 Months Ended	9 Months Ended
	Mar. 23, 2021 USD ($) $ / shares	Sep. 30, 2021 USD ($) vote $ / shares shares	Sep. 30, 2021 USD ($) vote $ / shares shares	Dec. 31, 2020 $ / shares	Nov. 29, 2019 $ / shares
Common stock and redeemable common stock details [Line Items]
Common stock, par value (in usd per share) | $ / shares		$ 0.001	$ 0.001	$ 0.001
Common stock, authorized shares | shares		125,000,000	125,000,000
Number of votes per share | vote		1	1
Dividends on common stock declared or paid | $			$ 0
Stock Issued During Period, Shares, New Issues | shares		6,271,836
Class of warrant or right, warrants to purchase of common stock (in shares) | shares		50,000	50,000
Sale of stock, price per share (in usd per share) | $ / shares	$ 8.70
Class of Warrant or Right, Additional Exercise Price of Warrants or Rights | $ / shares	$ 0.01				$ 0.001
Deferred offering costs | $	$ 3,500,000
Proceeds from issuance of common stock before underwriting discounts commissions and other expenses | $	$ 55,000,000
Funded
Common stock and redeemable common stock details [Line Items]
Warrant exercise price (usd per share) | $ / shares	$ 8.69
Redeemable Common Stock
Common stock and redeemable common stock details [Line Items]
Proceeds from issuance of common stock before underwriting discounts commissions and other expenses | $		$ 2,000,000