v3.26.1
Revenues from Contracts with Customers (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Disaggregation of Revenue [Line Items]    
Total revenue $ 622,183 $ 551,344
United States    
Disaggregation of Revenue [Line Items]    
Total revenue 529,901 472,682
United Kingdom    
Disaggregation of Revenue [Line Items]    
Total revenue 43,935 38,336
Canada    
Disaggregation of Revenue [Line Items]    
Total revenue 13,200 11,398
Ireland    
Disaggregation of Revenue [Line Items]    
Total revenue 24,900 20,975
Luxembourg    
Disaggregation of Revenue [Line Items]    
Total revenue 10,247 7,953
Investment management fees from pooled investment products    
Disaggregation of Revenue [Line Items]    
Total revenue 107,648 97,935
Investment management fees from investment management agreements    
Disaggregation of Revenue [Line Items]    
Total revenue 125,553 110,156
Investment operations fees    
Disaggregation of Revenue [Line Items]    
Total revenue 244,038 202,960
Investment processing fees - PaaS    
Disaggregation of Revenue [Line Items]    
Total revenue 88,272 79,139
Investment processing fees - SaaS    
Disaggregation of Revenue [Line Items]    
Total revenue 25,472 30,857
Professional services fees    
Disaggregation of Revenue [Line Items]    
Total revenue 9,915 9,608
Account fees and other    
Disaggregation of Revenue [Line Items]    
Total revenue 21,285 20,689
Investment Managers    
Disaggregation of Revenue [Line Items]    
Total revenue 220,717 192,048
Investment Managers | United States    
Disaggregation of Revenue [Line Items]    
Total revenue 193,894 170,036
Investment Managers | United Kingdom    
Disaggregation of Revenue [Line Items]    
Total revenue 55 0
Investment Managers | Canada    
Disaggregation of Revenue [Line Items]    
Total revenue 0 0
Investment Managers | Ireland    
Disaggregation of Revenue [Line Items]    
Total revenue 16,521 14,059
Investment Managers | Luxembourg    
Disaggregation of Revenue [Line Items]    
Total revenue 10,247 7,953
Investment Managers | Investment management fees from pooled investment products    
Disaggregation of Revenue [Line Items]    
Total revenue 242 109
Investment Managers | Investment management fees from investment management agreements    
Disaggregation of Revenue [Line Items]    
Total revenue 0 0
Investment Managers | Investment operations fees    
Disaggregation of Revenue [Line Items]    
Total revenue 209,061 180,357
Investment Managers | Investment processing fees - PaaS    
Disaggregation of Revenue [Line Items]    
Total revenue 1,445 1,287
Investment Managers | Investment processing fees - SaaS    
Disaggregation of Revenue [Line Items]    
Total revenue 0 0
Investment Managers | Professional services fees    
Disaggregation of Revenue [Line Items]    
Total revenue 2,139 1,709
Investment Managers | Account fees and other    
Disaggregation of Revenue [Line Items]    
Total revenue 7,830 8,586
Private Banks    
Disaggregation of Revenue [Line Items]    
Total revenue 152,262 137,714
Private Banks | United States    
Disaggregation of Revenue [Line Items]    
Total revenue 100,645 93,131
Private Banks | United Kingdom    
Disaggregation of Revenue [Line Items]    
Total revenue 34,649 29,767
Private Banks | Canada    
Disaggregation of Revenue [Line Items]    
Total revenue 11,678 9,983
Private Banks | Ireland    
Disaggregation of Revenue [Line Items]    
Total revenue 5,290 4,833
Private Banks | Luxembourg    
Disaggregation of Revenue [Line Items]    
Total revenue 0 0
Private Banks | Investment management fees from pooled investment products    
Disaggregation of Revenue [Line Items]    
Total revenue 35,339 30,743
Private Banks | Investment management fees from investment management agreements    
Disaggregation of Revenue [Line Items]    
Total revenue 938 1,058
Private Banks | Investment operations fees    
Disaggregation of Revenue [Line Items]    
Total revenue 626 622
Private Banks | Investment processing fees - PaaS    
Disaggregation of Revenue [Line Items]    
Total revenue 84,497 75,856
Private Banks | Investment processing fees - SaaS    
Disaggregation of Revenue [Line Items]    
Total revenue 22,407 21,815
Private Banks | Professional services fees    
Disaggregation of Revenue [Line Items]    
Total revenue 7,776 6,914
Private Banks | Account fees and other    
Disaggregation of Revenue [Line Items]    
Total revenue 679 706
Investment Advisors    
Disaggregation of Revenue [Line Items]    
Total revenue 169,695 136,576
Investment Advisors | United States    
Disaggregation of Revenue [Line Items]    
Total revenue 169,695 136,576
Investment Advisors | United Kingdom    
Disaggregation of Revenue [Line Items]    
Total revenue 0 0
Investment Advisors | Canada    
Disaggregation of Revenue [Line Items]    
Total revenue 0 0
Investment Advisors | Ireland    
Disaggregation of Revenue [Line Items]    
Total revenue 0 0
Investment Advisors | Luxembourg    
Disaggregation of Revenue [Line Items]    
Total revenue 0 0
Investment Advisors | Investment management fees from pooled investment products    
Disaggregation of Revenue [Line Items]    
Total revenue 58,235 55,104
Investment Advisors | Investment management fees from investment management agreements    
Disaggregation of Revenue [Line Items]    
Total revenue 67,254 52,077
Investment Advisors | Investment operations fees    
Disaggregation of Revenue [Line Items]    
Total revenue 34,321 20,837
Investment Advisors | Investment processing fees - PaaS    
Disaggregation of Revenue [Line Items]    
Total revenue 1,716 1,364
Investment Advisors | Investment processing fees - SaaS    
Disaggregation of Revenue [Line Items]    
Total revenue 1,100 1,382
Investment Advisors | Professional services fees    
Disaggregation of Revenue [Line Items]    
Total revenue 0 0
Investment Advisors | Account fees and other    
Disaggregation of Revenue [Line Items]    
Total revenue 7,069 5,812
Institutional Investors    
Disaggregation of Revenue [Line Items]    
Total revenue 71,516 68,506
Institutional Investors | United States    
Disaggregation of Revenue [Line Items]    
Total revenue 58,339 57,009
Institutional Investors | United Kingdom    
Disaggregation of Revenue [Line Items]    
Total revenue 8,566 7,999
Institutional Investors | Canada    
Disaggregation of Revenue [Line Items]    
Total revenue 1,522 1,415
Institutional Investors | Ireland    
Disaggregation of Revenue [Line Items]    
Total revenue 3,089 2,083
Institutional Investors | Luxembourg    
Disaggregation of Revenue [Line Items]    
Total revenue 0 0
Institutional Investors | Investment management fees from pooled investment products    
Disaggregation of Revenue [Line Items]    
Total revenue 13,379 11,576
Institutional Investors | Investment management fees from investment management agreements    
Disaggregation of Revenue [Line Items]    
Total revenue 51,918 52,237
Institutional Investors | Investment operations fees    
Disaggregation of Revenue [Line Items]    
Total revenue 20 11
Institutional Investors | Investment processing fees - PaaS    
Disaggregation of Revenue [Line Items]    
Total revenue 603 623
Institutional Investors | Investment processing fees - SaaS    
Disaggregation of Revenue [Line Items]    
Total revenue 1,809 1,836
Institutional Investors | Professional services fees    
Disaggregation of Revenue [Line Items]    
Total revenue 0 0
Institutional Investors | Account fees and other    
Disaggregation of Revenue [Line Items]    
Total revenue 3,787 2,223
Investments In New Businesses    
Disaggregation of Revenue [Line Items]    
Total revenue 7,993 16,500
Investments In New Businesses | United States    
Disaggregation of Revenue [Line Items]    
Total revenue 7,328 15,930
Investments In New Businesses | United Kingdom    
Disaggregation of Revenue [Line Items]    
Total revenue 665 570
Investments In New Businesses | Canada    
Disaggregation of Revenue [Line Items]    
Total revenue 0 0
Investments In New Businesses | Ireland    
Disaggregation of Revenue [Line Items]    
Total revenue 0 0
Investments In New Businesses | Luxembourg    
Disaggregation of Revenue [Line Items]    
Total revenue 0 0
Investments In New Businesses | Investment management fees from pooled investment products    
Disaggregation of Revenue [Line Items]    
Total revenue 453 403
Investments In New Businesses | Investment management fees from investment management agreements    
Disaggregation of Revenue [Line Items]    
Total revenue 5,443 4,784
Investments In New Businesses | Investment operations fees    
Disaggregation of Revenue [Line Items]    
Total revenue 10 1,133
Investments In New Businesses | Investment processing fees - PaaS    
Disaggregation of Revenue [Line Items]    
Total revenue 11 9
Investments In New Businesses | Investment processing fees - SaaS    
Disaggregation of Revenue [Line Items]    
Total revenue 156 5,824
Investments In New Businesses | Professional services fees    
Disaggregation of Revenue [Line Items]    
Total revenue 0 985
Investments In New Businesses | Account fees and other    
Disaggregation of Revenue [Line Items]    
Total revenue $ 1,920 $ 3,362