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Other Assets	9 Months Ended
Other Assets	Feb. 28, 2017
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Other Assets	NOTE 4 Other Assets Other assets consist primarily of the cash surrender value of life insurance policies which totaled $6,944,000 and $6,885,000 at February 28, 2017 and May 31, 2016, respectively.