Summary of Significant Accounting Policies - Summary of Property and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Sep. 30, 2024
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 236,635	$ 79,880
Accumulated depreciation	(7,980)	(3,447)
Property and equipment, net	228,655	76,433
Land
Property, Plant and Equipment [Line Items]
Total property and equipment	35,586	10,084
Building
Property, Plant and Equipment [Line Items]
Total property and equipment	185,882	57,407
Furniture and equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	8,046	5,996
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	623	781
Capitalized software costs
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 6,498	$ 5,612