Acquisitions - Acquisition of Aviditi Advisors (Details) - USD ($) $ in Thousands		9 Months Ended
	Aug. 23, 2024	Sep. 30, 2025
Business Combination
Goodwill acquired		$ 7,364
Aviditi Advisors
Business Combination
Net assets acquired	$ 34,500
Goodwill acquired	10,200
Goodwill, amount expected to be deductible for income tax purposes	10,200
Aviditi Advisors \| Customer relationships
Business Combination
Intangible assets	$ 1,500

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.

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PIPER SANDLER COMPANIES 10-Q