Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2017

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)			2017		2016		2017		2016
Net income		$	17,512	$	21,742	$	44,375	$	45,479
Denominator for basic earnings per share -
	weighted-average number of common
	shares outstanding during the period		49,865		48,965		49,716		49,377
Incremental common shares attributable to
	exercise of dilutive options		268		323		319		304
Incremental common shares attributable
	to outstanding restricted stock units		197		126		257		197
Denominator for diluted earnings per share			50,330		49,414		50,292		49,878
Basic earnings per share		$	0.35	$	0.44	$	0.89	$	0.92
Diluted earnings per share		$	0.35	$	0.44	$	0.88	$	0.91