Summary of Significant Accounting Policies - Schedule of Other Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
Other Liabilities [Abstract]
Income tax liabilities	$ 20,367	$ 20,170
Accrued warranty expenses	11,911	11,663	14,342	15,477
Accrued interest	20,060	33,372
Accrued and deferred compensation	11,354	25,579
Customer deposits	10,660	11,408
Other	42,966	43,431
Total	$ 117,318	$ 145,623