Quarterly report pursuant to sections 13 or 15(d)

Long-Term Debt (Schedule of Outstanding Debt) (Details)

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Long-Term Debt (Schedule of Outstanding Debt) (Details) (USD $)
In Thousands, unless otherwise specified
6 Months Ended 12 Months Ended
Mar. 31, 2013
Sep. 30, 2012
Debt Instrument [Line Items]    
Principal balance outstanding $ 37,000 $ 39,900
Remaining available credit 60,000 60,000
Revolving Line of Credit [Member]
   
Debt Instrument [Line Items]    
Principal balance outstanding      
Remaining available credit 60,000 60,000
Effective interest rate 2.45% 2.48%
Scheduled maturity date Oct. 01, 2020 Oct. 01, 2020
Term Loan [Member]
   
Debt Instrument [Line Items]    
Principal balance outstanding 37,000 38,000
Remaining available credit      
Effective interest rate 2.70% 2.73%
Scheduled maturity date Oct. 01, 2020 Oct. 01, 2020
Mortgage Note Payable [Member]
   
Debt Instrument [Line Items]    
Principal balance outstanding    1,900
Remaining available credit      
Effective interest rate    6.68%
Scheduled maturity date   Mar. 01, 2014