Property and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Sep. 30, 2019
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 49,451	$ 53,034
Less: Accumulated depreciation	(27,171)	(25,613)
Property and equipment, net	22,280	27,421
Model furnishings and sales office improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	17,604	21,114
Information systems
Property, Plant and Equipment [Line Items]
Property and equipment, gross	14,930	15,045
Furniture, fixtures and office equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	10,287	10,068
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	4,959	5,136
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 1,671	$ 1,671