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Debt (Tables)
12 Months Ended
Sep. 30, 2016
Debt Disclosure [Abstract]  
Debt (in thousands)

    2016   2015
Revolving credit agreements   $ 6,807       8,494  
5.6% to 7.9% mortgage notes                
  due in installments through 2027     36,012       40,191  
      42,819       48,685  
Less portion due within one year     4,455       4,180  
    $ 38,364       44,505