v3.26.1
Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Acquired Intangible Assets [Line Items]    
Accumulated Amortization  $ (499,158) $ (475,592)
Gross Carrying Amount 630,523 630,523
Net Carrying Amount  131,365 154,931
Exchange memberships    
Acquired Intangible Assets [Line Items]    
Gross Carrying Amount  3,998 3,998
Customer relationships    
Acquired Intangible Assets [Line Items]    
Gross Carrying Amount  479,130 479,130
Accumulated Amortization  (351,959) (328,411)
Net Carrying Amount  $ 127,171 $ 150,719
Customer relationships | Minimum    
Acquired Intangible Assets [Line Items]    
Useful Lives (Years)  10 years 10 years
Customer relationships | Maximum    
Acquired Intangible Assets [Line Items]    
Useful Lives (Years)  12 years 12 years
Technology    
Acquired Intangible Assets [Line Items]    
Gross Carrying Amount  $ 136,000 $ 136,000
Accumulated Amortization  (136,000) (136,000)
Net Carrying Amount  $ 0 $ 0
Technology | Minimum    
Acquired Intangible Assets [Line Items]    
Useful Lives (Years)  1 year 1 year
Technology | Maximum    
Acquired Intangible Assets [Line Items]    
Useful Lives (Years)  6 years 6 years
Favorable occupancy leases    
Acquired Intangible Assets [Line Items]    
Gross Carrying Amount  $ 5,895 $ 5,895
Accumulated Amortization  (5,699) (5,681)
Net Carrying Amount  $ 196 $ 214
Favorable occupancy leases | Minimum    
Acquired Intangible Assets [Line Items]    
Useful Lives (Years)  3 years 3 years
Favorable occupancy leases | Maximum    
Acquired Intangible Assets [Line Items]    
Useful Lives (Years)  15 years 15 years
Trade name    
Acquired Intangible Assets [Line Items]    
Gross Carrying Amount  $ 3,600 $ 3,600
Accumulated Amortization  (3,600) (3,600)
Net Carrying Amount  $ 0 $ 0
Useful Lives (Years)  3 years 3 years
ETF issuer relationships    
Acquired Intangible Assets [Line Items]    
Gross Carrying Amount  $ 950 $ 950
Accumulated Amortization  (950) (950)
Net Carrying Amount  $ 0 $ 0
Useful Lives (Years)  9 years 9 years
ETF buyer relationships    
Acquired Intangible Assets [Line Items]    
Gross Carrying Amount  $ 950 $ 950
Accumulated Amortization  (950) (950)
Net Carrying Amount  $ 0 $ 0
Useful Lives (Years)  9 years 9 years