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Earnings Per Common Share
 12 Months Ended
Dec. 31, 2019
Earnings Per Common Share [Abstract]  
Earnings Per Share [Text Block] Earnings Per Common Share
Summarized basic and diluted earnings per common share were calculated as follows: 
 
Year Ended December 31,
 (In thousands, except per share data)
2019
 
2018
 
2017
Numerator:
 
 
 
 
 
Net earnings
$
173,546

 
$
8,492

 
$
6,653

Denominator:
 
 
 
 
 
Weighted-average shares outstanding
54,325

 
53,471

 
53,282

Effect of dilutive stock awards
1,630

 
1,071

 
562

Weighted-average dilutive shares
55,955

 
54,542

 
53,844

 
 
 
 
 
 
Basic earnings per share
$
3.19

 
$
0.16

 
$
0.12

Diluted earnings per share
$
3.10

 
$
0.16

 
$
0.12

Anti-dilutive securities excluded from diluted earnings per common share:
 
 
 
 
 
Anti-dilutive restricted share units
—

 
—

 
—

Anti-dilutive performance share units
290

 
200

 
329

Anti-dilutive stock options
1,109

 
1,498

 
2,554