Earnings Per Share

9 Months Ended

Sep. 30, 2012

Earnings Per Share Reconciliation [Abstract]

Earnings Per Share

Earnings Per Share

The components of basic and diluted earnings per share are as follows (in thousands, except share and per share data):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2012			2011			2012			2011
Numerator for basic and diluted net earnings per common share:
Net earnings	$	31,650		$	25,498		$	91,377		$	84,947
Net earnings available to participating securities (a)	(513		)	(392		)	(1,512		)	(1,414		)
Net earnings available to common shareholders	31,137			25,106			89,865			83,533
Denominator:
Weighted-average outstanding shares of common stock	45,002,565			45,993,328			45,590,160			45,498,763
Dilutive effect of:
Dilutive effect of equity incentive plans	337,546			462,256			307,229			610,127
Common stock and common stock equivalents	45,340,111			46,455,584			45,897,389			46,108,890
Net earnings per share:
Basic	$	0.69		$	0.55		$	1.97		$	1.84
Diluted	$	0.69		$	0.54		$	1.96		$	1.81

(a) Represents unvested share-based payment awards that contain certain non-forfeitable rights to dividends or dividend equivalents (whether paid or unpaid).

For the three and nine months ended September 30, 2012 and 2011, there were 420,319 and 400,352 options outstanding, respectively, and 536,559 and 404,973 options outstanding, respectively, which were excluded from the computation of diluted earnings per share because the exercise prices were greater than the average market price of the common shares.