Earnings Per Share

6 Months Ended

Jun. 30, 2013

Earnings Per Share [Abstract]

Earnings Per Share

(9)Earnings Per Share

The following table details the numerator and denominator used in our earnings per share calculations.

				Six months ended June 30,				Three months ended June 30,
				2013		2012		2013		2012
Net earnings				$	194,012	$	176,077	$	88,162	$	93,493
Less: net earnings attributable to unvested restricted stock					(3,227)		(3,238)		(1,445)		(1,775)
		Net earnings available to common stock		$	190,785	$	172,839	$	86,717	$	91,718
Weighted-average common shares outstanding					98,965		100,802		98,870		99,563
Dilutive effect of outstanding securities (determined using
	treasury stock method)				245		181		251		288
		Weighted-average common shares and potential
			common shares outstanding		99,210		100,983		99,121		99,851
Anti-dilutive securities not included in treasury stock
	method computation				89		1,990		109		642