Commitments and Contingencies (Details) - USD ($)		3 Months Ended
	Apr. 24, 2026	Mar. 31, 2026	Dec. 31, 2025
Loss Contingencies [Line Items]
Contractual obligation		$ 700,000
Leases not yet commenced		9,800,000	$ 9,500,000
Outstanding letters of credit		0
Estimated range of loss in excess of amounts accrued		3,000,000
Litigation settlement amount awarded to other party		$ 70,000,000.0
Subsequent Event | Liberty Capital Group, Individually and on Behalf of All Others Similarly Situated v. Oppenheimer Holdings Inc., Oppenheimer & Co. Inc., and Oppenheimer Asset Management Inc.
Loss Contingencies [Line Items]
Litigation settlement amount awarded to other party	$ 70,000,000