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Goodwill and Other Intangible Assets (Details 4) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Dec. 31, 2011
Estimate of the amount and classification of amortization expense for definite-lived intangible assets  
Amortization Expense, 2012 $ 768
Amortization Expense, 2013 382
Amortization Expense, 2014 279
Amortization Expense, 2015 249
Amortization Expense, 2016 203
Operations Expense, 2012 133
Operations Expense, 2013 120
Operations Expense, 2014 107
Operations Expense, 2015 95
Operations Expense, 2016 93
Interest Expense, 2012 599
Interest Expense, 2013 599
Interest Expense, 2014 599
Interest Expense, 2015 350
Interest Expense, 2016 $ 0