Valuation and Qualifying Accounts (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$ 376
Balance at Beginning of Period	6,932
Charged to Costs And Expenses	833	457	118
Balance at End of Period	1,125	376
Inventory obsolescence expense	2,617	187	1,793
Balance at End of Period	7,764	6,932
Inventory Obsolescence Reserve
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	6,932	9,324	9,552
Charged to Other Assets	0	0	0
(Deductions) And Additions	(1,785)	(2,579)	(2,021)
Inventory obsolescence expense	2,617	187	1,793
Balance at End of Period	7,764	6,932	9,324
Allowance for Doubtful Accounts on Accounts and Notes Receivable
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	376	280	411
Charged to Costs And Expenses	833	457	118
Charged to Other Assets	0	0	0
(Deductions) And Additions	(84)	(361)	(249)
Balance at End of Period	$ 1,125	$ 376	$ 280