The calculations of earnings per common share for the quarters and six-month periods ended June 30, 2022 and 2021 are as follows:

Quarter Ended

Six-Month Period Ended

June 30,

2022

2021

2022

2021

(In thousands, except per share information)

Net income

$

74,695

$

70,558

$

157,295

$

131,708

Less: Preferred stock dividends

-

(669)

-

(1,338)

Net income attributable to common stockholders

$

74,695

$

69,889

$

157,295

$

130,370

Weighted-Average Shares:

Average common shares outstanding

194,405

213,574

196,257

215,294

Average potential dilutive common shares

961

1,035

1,184

1,139

Average common shares outstanding - assuming dilution

195,366

214,609

197,441

216,433

Earnings per common share:

Basic

$

0.38

$

0.33

$

0.80

$

0.61

Diluted

$

0.38

$

0.33

$

0.80

$

0.60