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Current Assets (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Current Assets
Balance at beginning of year	$ 2,938	$ 3,520	$ 3,296
Charged to expense	532	1,008	892
Reclassified to assets held for sale	0	(826)	0
Accounts written off	(1,047)	(764)	(668)
Balance at end of year	$ 2,423	$ 2,938	$ 3,520

Amount of the current period expense charged against operations, the offset which is generally to the allowance for doubtful accounts for the purpose of reducing receivables, including notes receivable, to an amount that approximates their net realizable value (the amount expected to be collected).

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