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Basis of Presentation Restricted Cash (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Sep. 30, 2011
Restricted Cash and Cash Equivalents Items [Line Items]    
Restricted cash $ 3,330 $ 6,571
Escrow Deposit [Member]
   
Restricted Cash and Cash Equivalents Items [Line Items]    
Restricted cash $ 4,300 $ 4,300