v3.24.1.u1
REDEEMABLE CONVERTIBLE PREFERRED SHARES - Terms and redemption rights (Details)
$ / shares in Units, ¥ in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Mar. 22, 2022
USD ($)
shares
Mar. 18, 2022
USD ($)
shares
Mar. 18, 2022
CNY (¥)
shares
Nov. 29, 2021
USD ($)
Dec. 31, 2022
USD ($)
$ / shares
shares
Jul. 31, 2022
USD ($)
shares
Dec. 31, 2023
USD ($)
D
$ / shares
Dec. 31, 2022
USD ($)
$ / shares
shares
Dec. 31, 2021
USD ($)
Dec. 31, 2022
CNY (¥)
REDEEMABLE CONVERTIBLE PREFERRED SHARES                    
Number of shares issued (in shares) | shares               62,895,699    
Cash consideration                 $ 197,918  
Number of shares redesignated from ordinary shares | shares               5,332,827    
Excess of the preferred shares' fair value over the ordinary shares' fair value was recognized as share-based compensation expenses               $ 10,625    
Threshold curing period             90 days      
Threshold number of business days to effectively provide remedy for any material adverse effect to the operation of the Group | D             20      
Redemption price as a percentage of issuance price (in percent)                   100.00%
Redemption rights, Simple interest rate (in percent)                   8.00%
Initial investment amount of the investor considered for interest accrual from a specified date | ¥                   ¥ 150,000
Pre-A Investor B                    
REDEEMABLE CONVERTIBLE PREFERRED SHARES                    
Number of shares issued (in shares) | shares   5,332,827 5,332,827              
Cash consideration   $ 23,650 ¥ 150,000              
Series Pre-A Preferred Shares                    
REDEEMABLE CONVERTIBLE PREFERRED SHARES                    
Number of shares issued (in shares) | shares               35,552,179    
Number of shares redesignated from ordinary shares | shares               5,332,827    
Excess of the preferred shares' fair value over the ordinary shares' fair value was recognized as share-based compensation expenses             $ 10,625      
Series Pre-A Preferred Shares | Pre-A Investor A                    
REDEEMABLE CONVERTIBLE PREFERRED SHARES                    
Number of shares issued (in shares) | shares           35,552,179        
Aggregate consideration           $ 153,126        
Aggregate consideration settled by cash           $ 129,681        
Series Pre-A Preferred Shares | Pre-A Investor A | Series Pre-A Note                    
REDEEMABLE CONVERTIBLE PREFERRED SHARES                    
Aggregate consideration settled by issuance of notes       $ 23,445            
Series Pre-A Preferred Shares | Pre-A Investor B                    
REDEEMABLE CONVERTIBLE PREFERRED SHARES                    
Number of shares redesignated from ordinary shares | shares 5,332,827                  
Excess of ordinary shares' fair value over its par value charged to additional paid-in capital $ 13,024                  
Series A Preferred Shares Preferred Shares                    
REDEEMABLE CONVERTIBLE PREFERRED SHARES                    
Number of shares issued (in shares) | shares         27,343,520     27,343,520    
Par value (in dollars per share) | $ / shares         $ 0.00001   $ 0.00001 $ 0.00001    
Aggregate consideration         $ 187,734          
Aggregate consideration settled by cash         130,304          
Series A Preferred Shares Preferred Shares | WFOE Exchangeable Notes                    
REDEEMABLE CONVERTIBLE PREFERRED SHARES                    
Aggregate consideration settled by issuance of notes         $ 57,430          
Series A Preferred Shares Preferred Shares | Related party | Northpole GLY 3 LP                    
REDEEMABLE CONVERTIBLE PREFERRED SHARES                    
Number of shares issued (in shares) | shares         2,818,400          
Aggregate consideration settled by cash         $ 20,000