| Acquisitions - Summary of Total Purchase Consideration (Detail) - Cortina Asset Management, LLC $ in Thousands | 12 Months Ended | 
|---|---|
| Dec. 31, 2024  USD ($) | |
| Business Acquisition [Line Items] | |
| Cash paid on date of acquisition | $ 17,072 | 
| Term loan with City National Bank drawdown | 18,000 | 
| Units issued | 8,952 | 
| Contingent consideration | 13,800 | 
| Total purchase consideration | $ 57,824 | 
| X | ||||||||||
| 
- Definition Business combination consideration transferred term loan with city national bank drawdown. No definition available. 
 | 
| X | ||||||||||
| 
- Definition 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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
 | 
| X | ||||||||||
| 
- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
 | 
| X | ||||||||||
| 
- Definition Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
 | 
| X | ||||||||||
| 
- Definition Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
 | 
| X | ||||||||||
| 
- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
 | 
| X | ||||||||||
| 
- Details 
 |