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Discontinued Operations	6 Months Ended
Discontinued Operations	Nov. 30, 2017
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations	DISCONTINUED OPERATIONS The Company continuously evaluates its portfolio of businesses for both impairment and economic viability, as well as for possible strategic dispositions. The Company monitors the expected cash proceeds to be realized from the disposition of discontinued operations’ assets, and adjusts asset values accordingly. During the three and six month periods ended November 30, 2017, the Company did not dispose of any new components of the business that would meet the criteria for discontinued operations reporting. As of May 31, 2017 and November 30, 2016, assets and liabilities of discontinued operations, and losses from discontinued operations for the three and six month periods ended November 30, 2016 primarily related to insignificant continuing cash flows from passive activities.