Business Segment Information - Schedule Of Additional Information Pertaining To Business Segments (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Segment Reporting Information [Line Items]
Capital Expenditures	$ 10,889	$ 14,130	$ 26,917	$ 33,479
Depreciation	7,665	8,367	15,592	16,756
Amortization	10,449	10,485	21,159	20,871
Operating Segments
Segment Reporting Information [Line Items]
Capital Expenditures	10,718	13,865	26,381	32,672
Depreciation	7,131	7,426	11,874	14,866
Amortization	10,355	10,377	21,001	20,684
Operating Segments \| Investment Managers
Segment Reporting Information [Line Items]
Capital Expenditures	4,150	6,389	10,636	14,064
Depreciation	1,732	1,636	1,794	3,215
Amortization	201	81	403	81
Operating Segments \| Private Banks
Segment Reporting Information [Line Items]
Capital Expenditures	4,210	4,586	9,713	11,018
Depreciation	2,694	2,832	4,953	5,736
Amortization	5,344	5,089	10,619	10,200
Operating Segments \| Investment Advisors
Segment Reporting Information [Line Items]
Capital Expenditures	1,902	1,987	4,534	5,152
Depreciation	2,000	2,190	4,025	4,371
Amortization	2,450	2,148	4,869	4,270
Operating Segments \| Institutional Investors
Segment Reporting Information [Line Items]
Capital Expenditures	335	730	1,098	1,849
Depreciation	494	598	813	1,202
Amortization	1,944	1,876	3,819	3,768
Operating Segments \| Investments In New Businesses
Segment Reporting Information [Line Items]
Capital Expenditures	121	173	400	589
Depreciation	211	170	289	342
Amortization	416	1,183	1,291	2,365
Corporate overhead
Segment Reporting Information [Line Items]
Capital Expenditures	171	265	536	807
Depreciation	534	941	3,718	1,890
Amortization	$ 94	$ 108	$ 158	$ 187

The aggregate amount of recurring noncash expense charged against earnings in the period to allocate the cost of assets over their estimated remaining economic lives.

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Future cash outflow to pay for purchases of fixed assets that have occurred.

+ References

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-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
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The expense recognized in the current period that allocates the cost of nonproduction tangible assets over their useful lives.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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