Supplemental Cash Flow Information Supplemental Disclosure of Non-cash Activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Supplemental disclosure of non-cash activity:
Decrease in obligations related to land not owned under option agreements	$ 0	$ (1,668)
Land acquisitions for debt	3,769	12,904
Supplemental disclosure of cash activity:
Interest payments	39,740	42,709
Income tax payments	146	62
Tax refunds received	150	$ 0
Non-cash seller financing	7,800
Non-cash Land Acquisitions, Lot Takedown Costs	$ 5,100