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Common Stock Repurchase Program (Narrative) (Details) (USD $)	9 Months Ended	58 Months Ended
	Jun. 30, 2012	Jun. 30, 2012
Common Stock Repurchase Program [Abstract]
Stock repurchased and retired during period (shares)		14,179,711
Stock repurchased and retired during period, value		$ 88,500,000
Stock repurchase program, remaining authorized repurchase amount	19,800,000
Shares paid for tax withholding for share based compensation (shares)	49,330
Payments related to tax withholding for share-based compensation	$ 464,000

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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