Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2011

Earnings Per Share [Abstract]

Calculation Of Basic And Diluted Earnings Per Share

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
(in thousands, except per share data)	2011		2010		2011		2010
Net income	$	19,867	$	22,469	$	49,081	$	60,748
Denominator for basic earnings per share - weighted-average number of common shares outstanding during the period		58,615		61,712		59,889		62,597
Incremental common shares attributable to exercise of outstanding dilutive options		177		305		298		474
Incremental common shares attributable to outstanding restricted shares, restricted stock units and phantom stock		87		86		204		91
Denominator for diluted earnings per share		58,879		62,103		60,391		63,162
Basic earnings per share	$	0.34	$	0.36	$	0.82	$	0.97
Diluted earnings per share	$	0.34	$	0.36	$	0.81	$	0.96