Earnings per Share (Tables)

3 Months Ended

Mar. 31, 2021

Earnings Per Share [Abstract]

Reconciliation of information used in computing basic and diluted earnings per share

The following table sets forth a reconciliation of the information used in computing basic and diluted earnings per share:

	Three Months Ended March 31,
	2021		2020
Net earnings	$	232,769	$	176,279
Basic earnings per common share:
Net earnings	$	1.62	$	1.22
Weighted average shares outstanding	143,765,000		144,259,000
Diluted earnings per common share:
Net earnings	$	1.61	$	1.21
Weighted average shares outstanding	144,938,000		145,782,000

Reconciliation of share amounts used in computing earnings per share

The following table is a reconciliation of the share amounts used in computing earnings per share:

	Three Months Ended March 31,
	2021	2020
Weighted average shares outstanding - Basic	143,765,000	144,259,000
Dilutive effect of assumed exercise of SARs and vesting of performance shares and RSUs	1,173,000	1,523,000
Weighted average shares outstanding - Diluted	144,938,000	145,782,000