Other Liabilities Other Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014
Other Liabilities Disclosure [Abstract]
Accrued warranty expenses	$ 40,903	$ 28,913	$ 27,681	$ 28,794	$ 27,227	$ 16,084
Accrued interest	27,539		31,632
Customer deposits	14,160		13,757
Accrued and deferred compensation	14,946		25,076
Estimated Litigation Liability	9,008		12,607
Income tax liabilities	2,493		1,998
Other	32,979		36,215
Total	$ 142,028		$ 148,966