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Stock Repurchase Program (Schedule) (Details) (USD $)	12 Months Ended
Stock Repurchase Program (Schedule) (Details) (USD $)	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Equity [Abstract]
Shares repurchased	28,000	48,000	0
Average purchase price	$ 46.78	$ 36.72	$ 0
Total amount	$ 1,301,000	$ 1,753,000	$ 0

Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

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