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Subsequent Event	12 Months Ended
Subsequent Event	May 30, 2013
Subsequent Events [Abstract]
Subsequent Event	13. Subsequent Event On June 27, 2013, the Company entered into a note purchase agreement with several purchasers pursuant to which the Company will issue and sell $50,000,000 in aggregate principal amount of its 4.02% senior notes due August 14, 2025 in a private placement exempt from the registration requirements of the Securities Act of 1933, as amended. The issuance and sale of the senior notes is expected to close on or about August 14, 2013.