Basic and Diluted Earnings per Share

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Abstract]

Basic and Diluted Earnings per Share

Basic and Diluted Earnings per Share

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

	Three months ended
	March 31,
(Amounts in thousands, except share and per share amounts)	Net earnings attributable to shareholders		Weighted average shares	Earnings per share
2013
Basic earnings attributable to shareholders	$	80,315	206,475,095	$	.39
Effect of dilutive potential common shares	—		1,138,768	—
Diluted earnings attributable to shareholders	$	80,315	207,613,863	$	.39
2012
Basic earnings attributable to shareholders	$	76,707	212,097,662	$	.36
Effect of dilutive potential common shares	—		2,101,848	—
Diluted earnings attributable to shareholders	$	76,707	214,199,510	$	.36

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

	Three months ended
	March 31,
	2013	2012
Shares	13,054,133	7,359,424