Earnings Per Share - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Details) - shares	3 Months Ended		6 Months Ended
	Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2016	Nov. 30, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share	3,333,333	4,008,333	4,033,333	4,008,333
Options To Purchase Common Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share		675,000	200,000	675,000
Warrants To Purchase Common Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share			500,000
Preferred Stock Convertible Into Common Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share	3,333,333	3,333,333	3,333,333	3,333,333