Provision for Income Taxes - Components of Income Tax Expense (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2025	Sep. 30, 2024
Income Tax Disclosure [Abstract]
Current expense									$ 2,095	$ 3,525
Deferred benefit									(1,702)	(3,175)
Provision for income taxes	$ (282)	$ (74)	$ 360	$ 389	$ (81)	$ 481	$ (60)	$ 10	$ 393	$ 350