Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2018

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				Six Months Ended
		June 30,				June 30,
(in thousands, except per share data)			2018		2017		2018		2017
				(as adjusted)				(as adjusted)
Net income (loss)		$	10,943	$	18,074	$	(12,698)	$	26,629
Denominator for basic earnings per share -
	weighted-average number of common
	shares outstanding during the period		47,451		49,766		47,981		49,640
Incremental common shares attributable to
	exercise of dilutive options		116		318		—		341
Incremental common shares attributable
	to outstanding restricted stock units		64		155		—		228
Denominator for diluted earnings per share			47,631		50,239		47,981		50,209
Basic earnings (loss) per share		$	0.23	$	0.36	$	(0.26)	$	0.54
Diluted earnings (loss) per share		$	0.23	$	0.36	$	(0.26)	$	0.53