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Goodwill and Intangibles, Net (Details) (USD $)
In Thousands, unless otherwise specified
9 Months Ended
Jun. 30, 2012
Summary of changes in the Partnership's goodwill  
Balance as of September 30, 2011 $ 199,296
Fiscal year 2012 activity 1,789
Balance as of June 30, 2012 $ 201,085