Capital stock - Additional Information (Detail) - $ / shares	6 Months Ended
	Jun. 30, 2024	Jun. 27, 2024	Dec. 31, 2023	Oct. 20, 2020
Number of shares of common stock authorized	520,000,000		320,000,000	320,000,000
Number of shares of preferred stock authorized	10,000,000		10,000,000	10,000,000
Preferred stock authorized par value	$ 0.0001		$ 0.0001	$ 0.0001
Common stock voting right	one
Preferred Stock, Shares Issued	0		0
Voting Common Stock [Member]
Number of shares of common stock authorized				300,000,000
Voting Common Stock [Member] | Minimum [Member]
Number of shares of common stock authorized		300,000,000
Voting Common Stock [Member] | Maximum [Member]
Number of shares of common stock authorized		500,000,000
Non-Voting Common Stock [Member]
Number of shares of common stock authorized				20,000,000