Discontinued Operations (Tables)

9 Months Ended

Feb. 28, 2021

Discontinued Operations and Disposal Groups [Abstract]

Discontinued operations

	Three Months Ended,				Nine Months Ended,
	February 28, 2021		February 29, 2020		February 28, 2021		February 29, 2020
Net revenue	$	—	$	—	$	—	$	4,343,008
Cost of revenue		—		—		—		2,374,251
Gross profit		—		—		—		1,968,757
Operating expenses:
General, administration and sales		—		—		—		1,252,222
Research and development		—		—		—		35,920
Total operating expenses		—		—		—		1,288,142
Operating income		—		—		—		680,615
Other expense, net		—		—		—		(140,923	)
Income before taxes		—		—		—		539,692
Provision for income taxes		—		—		—		7,589
Net income from discontinued operations	$	—	$	—	$	—	$	532,103