16. EARNINGS PER SHARE

Basic earnings per share is computed using the weighted-average number of common shares outstanding during the applicable period. Diluted earnings per share is computed using the weighted-average number of common shares outstanding during the applicable period, plus the dilutive effect of outstanding stock options and RSUs, using the treasury stock method. In periods of loss, all stock options and RSUs are excluded from the weighted-average number of common shares, as their inclusion would be anti-dilutive.



(in thousands, except per share amounts)	2018		2017		2016
Basic
Net income	$	10,617	$	98,548	$	45,015
Weighted-average common shares outstanding	78,564		77,431		76,343
Earnings per share, basic	$	0.14	$	1.27	$	0.59

Diluted
Net income	$	10,617	$	98,548	$	45,015
Weighted-average effect of dilutive securities:
Stock options	2,891		3,471		2,025
RSUs	1,609		1,930		1,364
Effect of dilutive securities	4,500		5,401		3,389
Weighted-average common shares outstanding, assuming dilution	83,064		82,832		79,732
Earnings per share, diluted	$	0.13	$	1.19	$	0.56

Outstanding anti-dilutive stock options and RSUs ⁽¹⁾	188		221		322

⁽¹⁾ Certain outstanding stock options and RSUs were excluded from the computation of diluted earnings per share because they were anti-dilutive in the period presented. These awards may be dilutive in the future.