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Earnings per Common Share (Tables)
12 Months Ended
Dec. 31, 2021
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

Years Ended December 31,

2021

2020

2019

(in thousands, except per share amounts)

Net income available to common stockholders

$

128,636

$

71,289

$

73,395

Earnings allocated to participating securities

 

(313

)

 

(356

)

 

(295

)

Income attributable to common stock

$

128,323

$

70,933

$

73,100

Weighted average common shares outstanding, including participating securities

39,723

39,643

35,289

Weighted average participating securities

 

(97

)

 

(131

)

 

(84

)

Weighted average common shares outstanding

39,626

39,512

35,205

Incremental shares from assumed conversions of options, restricted stock units, performance units and restricted stock

 

260

 

132

 

88

Weighted average common and equivalent shares outstanding

 

39,886

 

39,644

 

35,293

Earnings per common share:

Basic

$

3.24

$

1.80

$

2.08

Diluted

3.22

1.79

2.07