Organization and Significant Accounting Policies (Schedule of Accounts Receivable Allowance For Doubtful Accounts) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2012
Allowance for Doubtful Accounts Receivable [Roll Forward]
Accounts receivable allowance for doubtful accounts, Balance at Beginning of Year	$ 372		$ 508		$ 496
Adjustments to Costs and Expenses	(79)	[1]	19	[1]	(2)	[1]
Deductions	(272)	[2]	(155)	[2]	14	[2]
Accounts receivable allowance for doubtful accounts, Balance at End of Year	$ 21		$ 372		$ 508

[1] Includes increases/(decreases) charged or credited to costs and expenses.

[2] Uncollectible accounts written off, net of recoveries.