v3.26.1
Related Party Transactions - Additional Information (Detail)
1 Months Ended 12 Months Ended
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Apr. 30, 2025
CNY (¥)
Apr. 30, 2025
USD ($)
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2025
USD ($)
Sep. 30, 2025
Dec. 31, 2024
CNY (¥)
Schedule Of Related Party Transaction Contract Liabilities [Line Items]                  
Loans and Interest Receivable from Related Parties ¥ 2,070,000       ¥ 2,070,000   $ 296,000   ¥ 0
Interest income from short-term investments ¥ 1,127,000 $ 161,000              
Third Party Investor [Member]                  
Schedule Of Related Party Transaction Contract Liabilities [Line Items]                  
Payments to Acquire Equity Method Investments     ¥ 14,500 $ 2,073 ¥ 4,000,000 $ 572,000      
Equity Method Investment, Ownership Percentage 40.00%   4.63% 4.63% 40.00%   40.00% 31.00% 4.12%
Related Party [Member] | Third Party Investor [Member]                  
Schedule Of Related Party Transaction Contract Liabilities [Line Items]                  
Payments to Acquire Equity Method Investments     ¥ 14,500,000 $ 2,073,000          
Equity Method Investment, Ownership Percentage     4.63% 4.63%          
Mr Huazhi Hu [Member] | Short Term Bank Loans Guarantee [Member]                  
Schedule Of Related Party Transaction Contract Liabilities [Line Items]                  
Bank loans guaranteed by a related party ¥ 29,941,000       ¥ 29,941,000   $ 4,282,000   ¥ 34,472,000
Mr Huazhi Hu [Member] | Long Term Bank Loans Guarantee [Member]                  
Schedule Of Related Party Transaction Contract Liabilities [Line Items]                  
Bank loans guaranteed by a related party 7,000,000       7,000,000   1,001,000   ¥ 16,000,000
Hefei Heyi [Member]                  
Schedule Of Related Party Transaction Contract Liabilities [Line Items]                  
Loans and Interest Receivable from Related Parties ¥ 2,070,000       ¥ 2,070,000   $ 296,000    
Loans Receivable Interest Rate Percentage 3.00%       3.00%   3.00%    
Loans and Leases Receivable, Related Parties, Additions         ¥ 5,000,000 715,000      
Loans and Leases Receivable, Related Parties, Proceeds         ¥ 3,000,000 $ 429,000