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Retirement Plan (Schedule of Amounts Recognized on the Consolidated Balance Sheet) (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Sep. 30, 2013
Defined Benefit Plan Disclosure [Line Items]    
Accumulated other comprehensive income (net of tax of $353 in 2014 and $322 in 2013) $ (2,103) $ (2,091)
Pension Plans, Defined Benefit
   
Defined Benefit Plan Disclosure [Line Items]    
Other long-term liabilities 4,076 3,790
Accumulated other comprehensive income (net of tax of $353 in 2014 and $322 in 2013) 2,095 2,044
Amount recognized 6,171 5,834
Accumulated other comprehensive income, tax $ 353 $ 322