Valuation and Qualifying Accounts (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2011
Valuation and Qualifying Accounts Disclosure [Line Items]
Fair Value Inputs, Discount Rate	15.50%
Allowance for uncollectible accounts
Balance at the beginning of the period		$ 17,702	$ 14,978
Balance at the End of the period	$ 16,546	$ 17,702	$ 14,978