Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2015

Earnings Per Share [Abstract]

Calculation of Basic and Diluted Earnings per Share

The following table sets forth the calculation of basic and diluted earnings per share:

		Three Months Ended				Nine Months Ended
		September 30,				September 30,
(in thousands, except per share data)			2015		2014		2015		2014
Net income		$	20,565	$	16,906	$	55,980	$	57,903
Denominator for basic earnings per share -
	weighted-average number of common
	shares outstanding during the period		51,192		53,660		51,940		53,712
Incremental common shares attributable to
	exercise of dilutive options		292		445		326		460
Incremental common shares attributable
	to outstanding restricted shares and
	restricted stock units		104		160		182		215
Denominator for diluted earnings per share			51,588		54,265		52,448		54,387
Basic earnings per share		$	0.40	$	0.32	$	1.08	$	1.08
Diluted earnings per share		$	0.40	$	0.31	$	1.07	$	1.06