Investment Securities Available-for-Sale and Held to Maturity - Additional Information (Details)	Sep. 30, 2025 USD ($) Investment Security	Jun. 30, 2025 USD ($) Securitization	Jun. 03, 2025 USD ($)	Apr. 01, 2025 USD ($)	Dec. 31, 2024 USD ($) Security	Sep. 30, 2024 Investment
Schedule of Investments [Line Items]
Number of unrealized loss positions | Investment	41					73
Number of securities pledged as collateral | Security	0				0
Allowance for credit losses recognized on available for sale securities in unrealized loss position	$ 0				$ 0
Securities held-to-maturity	206,037,000				$ 0
Number of securitizations completed | Securitization		2
Securitization of revolving commercial real estate loans		$ 250,000,000	$ 150,000,000	$ 100,000,000
Investment securities, fair value	$ 206,037,000
Class A-1 Asset Backed Notes [Member]
Schedule of Investments [Line Items]
Investment securities, fair value			$ 127,500,000	$ 78,000,000