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Term Loans Mature on July 28, 2017 and Payable in Installments (Detail) (Term loans) In Thousands | Sep. 30, 2011 U.S. USD ($) | Sep. 30, 2011 Canadian CAD | Sep. 30, 2011 Euro EUR (€)
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Debt Instrument [Line Items] |  |  |
2013 | $ 78,000 | 12,150 | € 50,250
2014 | 78,000 | 12,150 | 50,250
2015 | 104,000 | 16,200 | 67,000
2016 | 104,000 | 16,200 | 67,000
2017 | $ 156,000 | 24,300 | € 100,500

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