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Basis of Presentation Shipping Expense (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 9 Months Ended
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Jun. 30, 2012 | Jun. 30, 2011 | Jun. 30, 2012 | Jun. 30, 2011
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |  |
Shipping expenses | $ 0.5 | $ 1.8 | $ 1.5 | $ 4.5

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