Property and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 62,432	$ 54,808
Less: Accumulated depreciation	(37,866)	(31,923)
Property and equipment, net	24,566	22,885
Model furnishings and sales office improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	22,544	19,617
Information systems
Property, Plant and Equipment [Line Items]
Property and equipment, gross	23,074	18,628
Furniture, fixtures and office equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	11,019	10,613
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	4,124	4,279
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 1,671	$ 1,671