v3.26.1
Manufacturing in Collaboration with Haima Auto - Additional Information (Detail) - Collaborative Arrangement [Member] - Haima Auto [Member]
¥ in Thousands
12 Months Ended
Dec. 31, 2021
Mar. 31, 2017
units
Dec. 31, 2025
CNY (¥)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2023
CNY (¥)
Dec. 31, 2021
CNY (¥)
Offsetting Assets [Line Items]            
Collaborative arrangement, date of contract   Mar. 31, 2017        
Collaborative arrangement, expiration date Dec. 31, 2021          
Annual production capacity | units   50,000        
Other operating expenses       ¥ 2,830   ¥ 132,856
Relocation and disposal costs       98,861    
Payment of termination Fee     ¥ 1,427 ¥ 4,166 ¥ 43,903