Earnings Per Share (Tables)

9 Months Ended

Feb. 28, 2018

Earnings Per Share [Abstract]

Schedule of Calculation of Anti-dilutive Earnings Per Share

Greystone excludes equity instruments from the calculation of diluted earnings per share if the effect of including such instruments is anti-dilutive, as follows:

	2018		2017
Nine-month periods ended February 28:
Preferred stock convertible into common stock		3,333,333		3,333,333
Total		3,333,333		3,333,333
Three-month periods ended February 28:
Options to purchase common stock		200,000		-
Warrants to purchase common stock		500,000		-
Preferred stock convertible into common stock		3,333,333		3,333,333
Total		4,033,333		3,333,333

Schedule of Computation of Basic and Diluted Earnings Per Shares

The following tables set forth the computation of basic and diluted earnings per share for the following periods:

	2018			2017
Nine-month periods ended February 28:
Numerator -
Net income attributable to common stockholders	$	210,817		$	697,337
Denominator -
Weighted-average shares outstanding - basic		28,361,201			28,309,003
Incremental shares from assumed conversion of options and warrants		630,952			579,167
Diluted shares		28,992,153			28,888,170
Income per share -
Basic and Diluted	$	0.01		$	0.02
Three-month periods ended February 28:
Numerator -
Net income (loss) attributable to common stockholders	$	(152,554	)	$	773,667
Denominator -
Weighted-average shares outstanding - basic		28,361,201			28,361,201
Incremental shares from assumed conversion of options and warrants		-			573,913
Diluted shares		28,361,201			28,935,114
Income (Loss) per share -
Basic and Diluted	$	(0.01	)	$	0.03