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Principal Accounting Policies - Additional Information (Detail)
¥ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2024
CNY (¥)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
CNY (¥)
Dec. 31, 2022
CNY (¥)
Dec. 31, 2024
USD ($)
Jan. 01, 2023
CNY (¥)
Foreign currency transaction gain (loss), before tax ¥ 550 $ 75 ¥ (350) ¥ 2,151    
Foreign currency translation adjustment, net of tax ¥ 3,742   2,385 47,034    
Foreign currency translation adjustment description calculated at the rate of US$1.00=RMB 7.2993, representing the index rates as of December 31, 2024 calculated at the rate of US$1.00=RMB 7.2993, representing the index rates as of December 31, 2024        
Goodwill ¥ 163,837   164,113   $ 22,446  
Goodwill, Impairment loss     0      
Revenue remaining performance obligation 391,672          
Deferred revenue recognized 145,644   182,620 168,362    
Defined contribution plan, administrative expense 56,091   ¥ 82,336 ¥ 129,738    
Impairment of Long-Lived Assets to be Disposed of ¥ 0          
Segment Reporting, Expense Information Used by CODM, Description In November 2023, the FASB issued ASU No. 2023-07, Improvements to Reportable Segment Disclosures (Topic 280). This ASU updates reportable segment disclosure requirements by requiring disclosures of significant reportable segment expenses that are regularly provided to the Chief Operating Decision Maker (“CODM”) and included within each reported measure of a segment’s profit or loss. In November 2023, the FASB issued ASU No. 2023-07, Improvements to Reportable Segment Disclosures (Topic 280). This ASU updates reportable segment disclosure requirements by requiring disclosures of significant reportable segment expenses that are regularly provided to the Chief Operating Decision Maker (“CODM”) and included within each reported measure of a segment’s profit or loss.        
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] srt:ChiefExecutiveOfficerMember srt:ChiefExecutiveOfficerMember        
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description The Group’s CODM uses consolidated net loss as the measures of segment profit or loss. Significant segment expenses are consistent with those reported on the consolidated statements of comprehensive loss and include cost of revenues, sales and marketing expenses, research and development expenses and general and administrative expenses. For significant segment expenses incurred during the years ended December 31, 2022, 2023, and 2024, refer to Consolidated Statements of Comprehensive Loss. The Group’s CODM uses consolidated net loss as the measures of segment profit or loss. Significant segment expenses are consistent with those reported on the consolidated statements of comprehensive loss and include cost of revenues, sales and marketing expenses, research and development expenses and general and administrative expenses. For significant segment expenses incurred during the years ended December 31, 2022, 2023, and 2024, refer to Consolidated Statements of Comprehensive Loss.        
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-12-31            
Revenue, remaining performance obligation, percentage 56.00%       56.00%  
Revenue, remaining performance obligation, expected timing of satisfaction, period 12 months       12 months  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-12-31            
Revenue, remaining performance obligation, percentage 42.00%       42.00%  
Revenue, remaining performance obligation, expected timing of satisfaction, period 36 months       36 months  
Maximum [Member]            
Finite-Lived Intangible Asset, Useful Life 5 years       5 years  
Minimum [Member]            
Finite-Lived Intangible Asset, Useful Life 3 years       3 years  
Beijing Lingdai [Member]            
Investment company, distributable earnings (loss), accumulated ordinary income (loss)           ¥ (3,142)
CEIBS Publishing Group [Member]            
Goodwill, Fair value ¥ 276