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Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2025

Earnings Per Share [Abstract]

Computation of Earnings Per Common Share

A summary of the information used in the computation of earnings per common share follows.

	Years Ended December 31,
($ in thousands, except per share data)	2025			2024			2023
Numerator:
Net income to common shareholders	$	486,073		$	460,815		$	392,602
Net income or dividends allocated to participating securities - basic and diluted		2,042			3,027			4,014
Net income allocated to common shareholders - basic and diluted	$	484,031		$	457,788		$	388,588
Denominator:
Weighted-average common shares - basic		84,905			86,346			86,130
Dilutive potential common shares		535			302			293
Weighted-average common shares - diluted		85,440			86,648			86,423
Earnings per common share:
Basic	$	5.70		$	5.30		$	4.51
Diluted	$	5.67		$	5.28		$	4.50

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- References

No definition available.

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- Definition

Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482662/260-10-50-1

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