Commitments And Contingencies - Additional Information (Details) € in Thousands, $ in Thousands	Sep. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2024 EUR (€)
Loss Contingencies [Line Items]
Unfunded commitments on asset-backed finance assets	$ 198,967	$ 18,818	€ 8,934
Series I
Loss Contingencies [Line Items]
Unfunded commitments on asset-backed finance assets	43,342	5,471	2,597
Series II
Loss Contingencies [Line Items]
Unfunded commitments on asset-backed finance assets	$ 155,625	$ 13,347	€ 6,337