Years Ended December 31,

($ in thousands, except per share data)

2023

2022

2021

Numerator:

Net income to common shareholders

$

392,602

$

524,089

$

463,215

Net income or dividends allocated to participating securities - basic and diluted

4,014

7,620

9,134

Net income allocated to common shareholders - basic and diluted

$

388,588

$

516,469

$

454,081

Denominator:

Weighted-average common shares - basic

86,130

86,068

86,823

Dilutive potential common shares

293

326

204

Weighted average common shares - diluted

86,423

86,394

87,027

Earnings per common share:

Basic

$

4.51

$

6.00

$

5.23

Diluted

$

4.50

$

5.98

$

5.22