Other Liabilities Other Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Mar. 31, 2015	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Sep. 30, 2013
Other Liabilities Disclosure [Abstract]
Accrued warranty expenses	$ 30,824	$ 28,794	$ 16,084	$ 13,781	$ 12,561	$ 11,663
Accrued interest	20,671		34,645
Customer deposits	19,662		11,977
Accrued and deferred compensation	17,138		24,270
Estimated Litigation Liability	11,888		13,401
Income tax liabilities	2,112		5,576
Other	33,997		36,563
Total	$ 136,292		$ 142,516