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EARNINGS PER SHARE
 12 Months Ended
Dec. 31, 2019
Earnings Per Share [Abstract]  
EARNINGS PER SHARE
17. 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)
2019
 
2018
 
2017
Basic
 
 
 
 
 
Net (loss) income
$
(90,433
)
 
$
10,617

 
$
98,548

Weighted-average common shares outstanding
79,055

 
78,564

 
77,431

(Loss) earnings per share, basic
$
(1.14
)
 
$
0.14

 
$
1.27

 
 
 
 
 
 
Diluted
 
 
 
 
 
Net (loss) income
$
(90,433
)
 
$
10,617

 
$
98,548

Weighted-average effect of dilutive securities:
 
 
 
 
 
Stock options
—

 
2,891

 
3,471

RSUs
—

 
1,609

 
1,930

Effect of dilutive securities
—

 
4,500

 
5,401

Weighted-average common shares outstanding, assuming dilution
79,055

 
83,064

 
82,832

(Loss) earnings per share, diluted
$
(1.14
)
 
$
0.13

 
$
1.19

 
 
 
 
 
 
Outstanding anti-dilutive stock options and RSUs (1)
5,911

 
188

 
221

(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.