Earnings (Loss) Per Share

6 Months Ended

Jun. 30, 2021

13. EARNINGS (LOSS) PER SHARE

Basic earnings (loss) per ordinary share is calculated based upon net income (loss) available to holders of ordinary shares divided by the weighted average number of shares outstanding. For the calculation of diluted earnings (loss) per ordinary share, the Company uses the weighted average number of ordinary shares outstanding, as adjusted for the effect of potential outstanding shares, including stock options and restricted stock unit awards.

	Three Months Ended					Six Months Ended
	June 30,					June 30,
(In thousands)	2021		2020			2021			2020
Numerator:
Net income (loss)	$	2,364	$	(29,431	)	$	(20,054	)	$	(68,085	)
Denominator:
Weighted average number of ordinary shares outstanding		160,817		158,895			160,229			158,495
Effect of dilutive securities:
Stock options		461		—			—			—
Restricted stock units		2,659		—			—			—
Dilutive ordinary share equivalents		3,120		—			—			—
Shares used in calculating diluted earnings (loss) per share		163,937		158,895			160,229			158,495

The following potential ordinary share equivalents have not been included in the net earnings (loss) per ordinary share calculations because the effect would have been anti-dilutive:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(In thousands)	2021		2020		2021		2020
Stock options		15,465		16,882		15,265		15,375
Restricted stock unit awards		596		4,683		3,189		4,226
Total		16,061		21,565		18,454		19,601