Long-Term Debt (Policy)	3 Months Ended
Sep. 30, 2011
Long-Term Debt [Abstract]
Long-Term Debt	At September 30, 2011 and June 30, 2011, we had an unsecured revolving credit facility under which we may borrow up to a maximum of $160 million at any one time, with the potential to expand the total credit availability to $260 million based on obtaining consent of the issuing bank and certain other conditions. The facility expires in October 2012, and all outstanding amounts are then due and payable. At September 30, 2011 and June 30, 2011, we had no borrowings outstanding under this facility. Loans may be used for general corporate purposes. At September 30, 2011, we had approximately $6.7 million of standby letters of credit outstanding, which reduced the amount available for borrowing on the unsecured revolving credit facility. We paid no interest for the three months ended September 30, 2011 and 2010.

Long-Term Debt (Policy)

3 Months Ended

Sep. 30, 2011

At September 30, 2011 and June 30, 2011, we had an unsecured revolving credit facility under which we may borrow up to a maximum of $160 million at any one time, with the potential to expand the total credit availability to $260 million based on obtaining consent of the issuing bank and certain other conditions. The facility expires in October 2012, and all outstanding amounts are then due and payable. At September 30, 2011 and June 30, 2011, we had no borrowings outstanding under this facility. Loans may be used for general corporate purposes. At September 30, 2011, we had approximately $6.7 million of standby letters of credit outstanding, which reduced the amount available for borrowing on the unsecured revolving credit facility.

We paid no interest for the three months ended September 30, 2011 and 2010.