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Receivables from and Payables to Brokers, Dealers and Clearing Organizations - Additional Information (Details)	Dec. 31, 2025 USD ($)
Pershing clearing arrangement
Schedule Of Compliance With Regulatory Capital Requirements For Broker Dealer
Excess net capital required	$ 120,000,000

X

- Definition

The amount of excess net capital which the reporting entity's U.S. broker dealer subsidiary is required to maintain in order to maintain compliance with the debt instrument.

+ References

No definition available.

+ Details

Name:	pipr_DebtInstrumentCovenantComplianceExcessNetCapitalRequirement
Namespace Prefix:	pipr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Schedule Of Compliance With Regulatory Capital Requirements For Broker Dealer [Line Items]

+ References

No definition available.

+ Details

Name:	pipr_ScheduleOfComplianceWithRegulatoryCapitalRequirementsForBrokerDealerLineItems
Namespace Prefix:	pipr_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_DebtInstrumentAxis=pipr_PershingclearingarrangementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: