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Short-Term Borrowings and Long-Term Debt (Long-Term Debt) (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Jun. 30, 2011
Long-term debt $ 5,429 $ 30,429
Less current portion 0 0
Long-term portion 5,429 30,429
Industrial Development Revenue Bond [Member]
   
Long-term debt 5,429 5,429
Variable interest rate of debt 1.09%  
Unsecured Notes Payable to Bank [Member]
   
Long-term debt $ 0 $ 25,000