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Revenues from Contracts with Customers (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | $ 578,511 | $ 537,396 | $ 1,689,456 | $ 1,567,961
United States |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 491,307 | 458,263 | 1,441,010 | 1,339,455
United Kingdom |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 42,904 | 41,500 | 122,098 | 121,569
Canada |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 12,520 | 11,866 | 35,790 | 34,618
Ireland |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 22,208 | 17,804 | 64,552 | 50,576
Luxembourg |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 9,572 | 7,963 | 26,006 | 21,743
Investment management fees from pooled investment products |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 105,730 | 106,777 | 302,745 | 314,062
Investment management fees from investment management agreements |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 119,814 | 110,022 | 342,358 | 323,141
Investment operations fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 217,140 | 189,048 | 627,184 | 546,811
Investment processing fees - PaaS |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 83,268 | 78,266 | 244,752 | 222,989
Investment processing fees - SaaS |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 25,788 | 28,537 | 88,248 | 87,878
Professional services fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 6,087 | 6,487 | 23,314 | 19,128
Account fees and other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 20,684 | 18,259 | 60,855 | 53,952
Investment Managers |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 207,050 | 184,607 | 594,165 | 537,128
Investment Managers | United States |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 182,696 | 166,415 | 524,823 | 484,785
Investment Managers | United Kingdom |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 66 | 0 | 220 | 0
Investment Managers | Canada |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 0
Investment Managers | Ireland |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 14,716 | 10,229 | 43,116 | 30,600
Investment Managers | Luxembourg |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 9,572 | 7,963 | 26,006 | 21,743
Investment Managers | Investment management fees from pooled investment products |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 163 | (191) | 385 | 273
Investment Managers | Investment management fees from investment management agreements |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 0
Investment Managers | Investment operations fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 195,737 | 176,687 | 560,970 | 511,203
Investment Managers | Investment processing fees - PaaS |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 1,387 | 1,267 | 4,003 | 3,772
Investment Managers | Investment processing fees - SaaS |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 19
Investment Managers | Professional services fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 1,231 | 631 | 4,056 | 2,749
Investment Managers | Account fees and other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 8,532 | 6,213 | 24,751 | 19,112
Private Banks |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 143,994 | 138,734 | 423,157 | 401,272
Private Banks | United States |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 94,224 | 90,549 | 280,629 | 262,886
Private Banks | United Kingdom |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 33,355 | 32,062 | 95,764 | 93,264
Private Banks | Canada |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 10,943 | 10,368 | 31,269 | 30,234
Private Banks | Ireland |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 5,472 | 5,755 | 15,495 | 14,888
Private Banks | Luxembourg |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 0
Private Banks | Investment management fees from pooled investment products |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 34,797 | 34,899 | 98,093 | 99,913
Private Banks | Investment management fees from investment management agreements |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 1,057 | 1,133 | 3,077 | 3,229
Private Banks | Investment operations fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 629 | 570 | 1,871 | 1,650
Private Banks | Investment processing fees - PaaS |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 79,837 | 75,283 | 234,617 | 214,001
Private Banks | Investment processing fees - SaaS |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 22,076 | 21,296 | 65,742 | 66,065
Private Banks | Professional services fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 4,856 | 4,806 | 17,644 | 14,042
Private Banks | Account fees and other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 742 | 747 | 2,113 | 2,372
Investment Advisors |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 147,465 | 126,836 | 421,234 | 370,141
Investment Advisors | United States |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 147,465 | 126,836 | 421,234 | 370,141
Investment Advisors | United Kingdom |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 0
Investment Advisors | Canada |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 0
Investment Advisors | Ireland |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 0
Investment Advisors | Luxembourg |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 0
Investment Advisors | Investment management fees from pooled investment products |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 57,724 | 59,707 | 166,903 | 176,368
Investment Advisors | Investment management fees from investment management agreements |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 59,871 | 49,864 | 165,862 | 144,203
Investment Advisors | Investment operations fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 20,739 | 10,670 | 62,296 | 30,397
Investment Advisors | Investment processing fees - PaaS |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 1,717 | 1,449 | 4,577 | 4,109
Investment Advisors | Investment processing fees - SaaS |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 1,282 | 0 | 4,075 | 0
Investment Advisors | Professional services fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 0
Investment Advisors | Account fees and other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 6,132 | 5,146 | 17,521 | 15,064
Institutional Investors |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 71,826 | 71,626 | 209,675 | 214,911
Institutional Investors | United States |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 59,335 | 58,870 | 174,508 | 177,134
Institutional Investors | United Kingdom |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 8,894 | 9,438 | 24,705 | 28,305
Institutional Investors | Canada |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 1,577 | 1,498 | 4,521 | 4,384
Institutional Investors | Ireland |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 2,020 | 1,820 | 5,941 | 5,088
Institutional Investors | Luxembourg |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 0
Institutional Investors | Investment management fees from pooled investment products |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 12,640 | 11,854 | 36,161 | 36,185
Institutional Investors | Investment management fees from investment management agreements |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 53,633 | 54,296 | 158,383 | 162,046
Institutional Investors | Investment operations fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 21 | 0 | 48 | 0
Institutional Investors | Investment processing fees - PaaS |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 316 | 260 | 1,524 | 1,081
Institutional Investors | Investment processing fees - SaaS |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 1,809 | 2,004 | 5,545 | 6,335
Institutional Investors | Professional services fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 0
Institutional Investors | Account fees and other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 3,407 | 3,212 | 8,014 | 9,264
Investments In New Businesses |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 8,176 | 15,593 | 41,225 | 44,509
Investments In New Businesses | United States |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 7,587 | 15,593 | 39,816 | 44,509
Investments In New Businesses | United Kingdom |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 589 | 0 | 1,409 | 0
Investments In New Businesses | Canada |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 0
Investments In New Businesses | Ireland |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 0
Investments In New Businesses | Luxembourg |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 0 | 0 | 0
Investments In New Businesses | Investment management fees from pooled investment products |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 406 | 508 | 1,203 | 1,323
Investments In New Businesses | Investment management fees from investment management agreements |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 5,253 | 4,729 | 15,036 | 13,663
Investments In New Businesses | Investment operations fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 14 | 1,121 | 1,999 | 3,561
Investments In New Businesses | Investment processing fees - PaaS |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 11 | 7 | 31 | 26
Investments In New Businesses | Investment processing fees - SaaS |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 621 | 5,237 | 12,886 | 15,459
Investments In New Businesses | Professional services fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | 0 | 1,050 | 1,614 | 2,337
Investments In New Businesses | Account fees and other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | $ 1,871 | $ 2,941 | $ 8,456 | $ 8,140

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