Summary of significant accounting policies and estimates (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Summary Of Significant Accounting Policies [Line Items]
Carrying value of intangibles	$ 35,042	$ 35,709
Defined-lived intangible assets	$ 2,900
Number of business days for related transactions (in days)	1 day
Cash equivalents maximum maturity period of highly liquid investments	90 days
Minimum | Furniture, fixtures and equipment
Summary Of Significant Accounting Policies [Line Items]
Furniture, fixtures, and equipment, useful life	3 years
Minimum | Notes Receivable
Summary Of Significant Accounting Policies [Line Items]
Service period	3 years
Maximum | Furniture, fixtures and equipment
Summary Of Significant Accounting Policies [Line Items]
Furniture, fixtures, and equipment, useful life	7 years
Maximum | Notes Receivable
Summary Of Significant Accounting Policies [Line Items]
Service period	9 years
Securities
Summary Of Significant Accounting Policies [Line Items]
Number of business days for related transactions (in days)	1 day