v3.25.2
Summary of significant accounting policies - Additional Information (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 1 Months Ended 12 Months Ended
Dec. 31, 2023
Jan. 01, 2023
Sep. 30, 2023
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Jun. 30, 2025
Jun. 30, 2024
Jan. 01, 2024
Oct. 31, 2023
Nov. 07, 2022
Oct. 07, 2022
Summary of significant accounting policies [Line Items]                        
Cash and cash equivalents segregated for the benefit of stablecoin holders $ 24,346,152     $ 43,918,572 $ 24,346,152 $ 35,987,965 $ 61,365,920 $ 31,991,173        
Net asset value per share       $ 1                
Impairment of intangible assets excluding goodwill       $ 0 0 0            
Impairment of intangible assets finitelived       0 0 $ 0            
Investment owned, face amount                     $ 300 $ 300
Incremental credit losses   $ 1,000                    
Digital assets                 $ 6,900      
Deferred tax liabilities, net                 200      
Retained earnings accumulated deficit (1,385,607)     $ (1,223,213) $ (1,385,607)   (1,640,510)   $ 6,700      
Derecognition of digital assets $ 524,200                      
Centre Consortium LLC [Member]                        
Summary of significant accounting policies [Line Items]                        
Equity method investment, ownership percentage       50.00%                
2013 Share Award Plan [Member]                        
Summary of significant accounting policies [Line Items]                        
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage       100.00%                
Share-based compensation arrangement by share-based payment award, expiration period       10 years                
Common Stock [Member]                        
Summary of significant accounting policies [Line Items]                        
Stock issued during period, shares, employee stock purchase plans     240                  
Common stock, par or stated value per share                   $ 25.09    
Minimum [Member]                        
Summary of significant accounting policies [Line Items]                        
Equity ownership, excluding consolidated entity and equity method investee, percentage       20.00%                
Subsidiary of Common Parent [Member]                        
Summary of significant accounting policies [Line Items]                        
Cash and cash equivalents segregated for the benefit of stablecoin holders       $ 37,500,000     $ 53,200,000          
Chief Executive Officer [Member]                        
Summary of significant accounting policies [Line Items]                        
Investment owned, net assets, percentage                     40.00%