Earnings per Share (Tables)

6 Months Ended

Jun. 30, 2016

Earnings per Share [Abstract]

Calculations of the Basic and Diluted EPS

	Three Months Ended June 30,				Six Months Ended June 30,
(in thousands, except per share data)	2016		2015		2016		2015
Net income	$	21,361	$	11,777	$	36,760	$	16,903
Weighted-average common shares outstanding - basic		49,131		49,028		49,105		48,890
Effect of diluted stock options and unvested restricted stock		430		800		318		798
Weighted-average common shares outstanding - diluted		49,561		49,828		49,423		49,688
Net income per share:
Basic	$	0.43	$	0.24	$	0.75	$	0.35
Diluted	$	0.43	$	0.24	$	0.74	$	0.34
Anti-dilutive shares not included above		1,704		628		1,704		574