Basic and Diluted Loss per Common Share - Additional Information (Detail) - shares	6 Months Ended
	Jun. 30, 2025	Dec. 31, 2024
Class of Stock [Line Items]
Common stock, conversion ratio	Each share of class B common stock is convertible at any time, at the option of the holder, into one share of class A common stock.
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Convertible, shares	0.1
Class A
Class of Stock [Line Items]
Common stock, votes per share	one
Class B Convertible
Class of Stock [Line Items]
Common stock, votes per share	ten