Shareholders' Deficit - Additional Information (Detail) - $ / shares	Sep. 30, 2021	Dec. 31, 2020	Dec. 11, 2020	Dec. 08, 2020	Dec. 07, 2020	Oct. 07, 2020
Class of Stock [Line Items]
Preferred stock shares authorized	1,000,000	1,000,000
Preferred stock par or stated value per share	$ 0.0001	$ 0.0001
Preferred stock shares issued	0	0
Preferred stock shares outstanding	0	0
Temporary equity par or stated value per share	$ 0.0001	$ 0.0001		$ 0
Temporary equity shares outstanding	13,800,000	13,800,000
Percent of shares convertible	20.00%
Common Class A [Member]
Class of Stock [Line Items]
Temporary Equity, Shares Authorized	479,000,000
Temporary equity par or stated value per share	$ 0.0001
Common stock shares issued including temporary equity	14,301,000	14,301,000
Common stock shares outstanding including temporary equity	14,301,000	14,301,000
Temporary equity shares outstanding	13,800,000	13,800,000
Common stock shares authorized	479,000,000	479,000,000
Common stock par or stated value per share	$ 0.0001	$ 0.0001
Common stock shares issued	501,000	501,000
Common stock shares outstanding	501,000	501,000
Common Class B [Member]
Class of Stock [Line Items]
Common stock shares authorized	20,000,000	20,000,000
Common stock par or stated value per share	$ 0.0001	$ 0.0001
Common stock shares issued	3,450,000	3,450,000				2,875,000
Common stock shares outstanding	3,450,000	3,450,000		3,450,000	2,875,000
Number of shares forfeited				450,000
Percent of founder shares to issued and outstanding shares				20.00%
Number of shares no longer subject to forfeiture			450,000