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Related party transactions - Summary of affiliated transactions (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Aug. 31, 2025	Jun. 30, 2025	Dec. 31, 2024
Related Party Transaction [Line Items]
The Company's Investments in debt and equity of affiliates	$ 61,333			$ 46,841
Re/Non-Performing Securities
Related Party Transaction [Line Items]
The Company's Investments in debt and equity of affiliates	$ 843
June 2025 Acquiring Affiliate | Affiliated Entity | Re/Non-Performing Securities
Related Party Transaction [Line Items]
The Company's Investments in debt and equity of affiliates			$ 100
August 2025 Acquiring Affiliate | Affiliated Entity | Arc Home
Related Party Transaction [Line Items]
The Company's Investments in debt and equity of affiliates		$ 15,700

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