Summary of Significant Accounting Policies - Schedule of Other Liabilities (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2013	Mar. 31, 2013	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Sep. 30, 2011
Accounting Policies [Abstract]
Reverse stock split ratio	one-for-five
Other Liabilities [Abstract]
Income tax liabilities	$ 22,029		$ 22,225
Accrued warranty expenses	13,445	13,601	15,477	16,034	16,133	17,916
Accrued interest	16,534		28,673
Accrued and deferred compensation	20,489		24,612
Customer deposits	13,724		8,830
Other	40,525		47,901
Total	$ 126,746		$ 147,718