Earnings Per Share (Tables)

6 Months Ended

Nov. 30, 2016

Earnings Per Share [Abstract]

Schedule of Antidilutive Securities Excluded from Computation of 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:

	2016		2015
Six-month periods ended November 30:
Options to purchase common stock		200,000		675,000
Warrants to purchase common stock		500,000		-
Preferred stock convertible into common stock		3,333,333		3,333,333
Total		4,033,333		4,008,333
Three-month periods ended November 30:
Options to purchase common stock		-		675,000
Preferred stock convertible into common stock		3,333,333		3,333,333
Total		3,333,333		4,008,333

Schedule of Computation of Basic and Diluted Earnings Per Share

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

	2016			2015
Six-month periods ended November 30:
Numerator -
Net loss available to common stockholders	$	(76,330	)	$	(113,735	)
Denominator -
Weighted-average shares outstanding - basic		28,283,332			27,520,217
Incremental shares from assumed conversion of options and warrants		-			-
Diluted shares		28,283,332			27,520,217
Loss per share -
Basic and Diluted	$	(0.00	)	$	(0.00	)
Three-month periods ended November 30:
Numerator -
Net income (loss) available to common stockholders	$	41,109		$	(22,420	)
Denominator -
Weighted-average shares outstanding - basic		28,361,201			27,630,432
Incremental shares from assumed conversion of options and warrants		579,167			-
Diluted shares		28,940,368			27,630,432
Loss per share -
Basic and Diluted	$	0.00		$	(0.00