Basic and Diluted Earnings per Share (Tables)

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

The following table reconciles the numerator and the denominator of the basic and diluted per share computations for earnings attributable to shareholders:

	Three months ended
	March 31,
(Amounts in thousands, except per share amounts)	Net earnings attributable to shareholders		Weighted average shares	Earnings per share
2018
Basic earnings attributable to shareholders	$	135,692	175,900	$	0.77
Effect of dilutive potential common shares	—		3,516	—
Diluted earnings attributable to shareholders	$	135,692	179,416	$	0.76
2017
Basic earnings attributable to shareholders	$	93,264	180,062	$	0.52
Effect of dilutive potential common shares	—		2,032	—
Diluted earnings attributable to shareholders	$	93,264	182,094	$	0.51

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following potential common shares have been excluded from the computation of diluted earnings per share because the effect would have been antidilutive:

	Three months ended
	March 31,
	2018	2017
Shares	—	3,751