Other Accrued Liabilities Other Accrued Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013
Other Liabilities Disclosure [Abstract]
Accrued interest	$ 31,554		$ 34,645
Accrued warranty expenses	28,794	27,227	16,084	12,561	11,911	11,663
Customer deposits	18,959		11,977
Accrued and deferred compensation	12,381		24,270
Income tax liabilities	2,303		5,576
Litigation Accrual	8,371		13,401
Other	35,073		36,563
Total	$ 137,435		$ 142,516