Property and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 82,374	$ 67,581
Less: Accumulated depreciation	(43,746)	(36,437)
Property and equipment, net	38,628	31,144
Model furnishings and sales office improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	32,179	24,736
Information systems
Property, Plant and Equipment [Line Items]
Property and equipment, gross	30,140	25,745
Furniture, fixtures and office equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	15,447	12,692
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	3,226	3,026
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 1,382	$ 1,382