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3. EARNINGS PER SHARE

9 Months Ended

Feb. 28, 2018

Basic earnings per share is determined using the weighted average number of common shares outstanding during the period. Diluted earnings per share is determined using the weighted average number of common shares and potential common shares (representing the dilutive effect of stock options, RSUs and ESPP shares) outstanding during the period using the treasury stock method.

The following table presents the computation of basic and diluted net income (loss) per share attributable to the Company’s common shareholders (in thousands, except per share data):

	Three Months Ended				Nine Months Ended
	February 28,				February 28,
	2018		2017		2018		2017
Numerator: Net income (loss)	$	267	$	(2,651)	$	337	$	(4,858)

Denominator for basic net income (loss) per share:
Weighted-average shares outstanding		21,832		16,672		21,631		15,411

Shares used in basic net income (loss) per share calculation		21,832		16,672		21,631		15,411
Effect of dilutive securities		809		—		1,207		—

Denominator for diluted net income (loss) per share		22,641		16,672		22,838		15,411

Basic net income (loss) per share	$	0.01	$	(0.16)	$	0.02	$	(0.32)
Diluted net income (loss) per share	$	0.01	$	(0.16)	$	0.01	$	(0.32)

For the purpose of computing diluted earnings per share, the weighted average number of potential common shares does not include stock options with an exercise price greater than the average fair value of the Company’s common stock for the period, as the effect would be anti-dilutive. Stock options to purchase 983,000 shares of common stock were outstanding as of February 28, 2018 but were not included in the computation of diluted net income per share, because the inclusion of such shares would be anti-dilutive. In the three and nine months ended February 28, 2017, potential common shares have not been included in the calculation of diluted net loss per share as the effect would be anti-dilutive. As such, the numerator and the denominator used in computing both basic and diluted net loss per share for this period are the same. Stock options to purchase 3,157,000 shares of common stock, RSUs for 34,000 shares and ESPP rights to purchase 253,000 ESPP shares were outstanding as of February 28, 2017 but were not included in the computation of diluted net loss per share, because the inclusion of such shares would be anti-dilutive. The 2,657,000 shares convertible under the convertible notes outstanding at February 28, 2018 and 2017 were not included in the computation of diluted net income (loss) per share, because the inclusion of such shares would be anti-dilutive.