Earnings per Share (Tables)

6 Months Ended

Jun. 30, 2019

Earnings Per Share [Abstract]

Reconciliation of Number of Shares Used in Calculating Basic and Diluted Earnings per Share

The following table reconciles the number of shares used in calculating basic and diluted earnings per share:

	Three Months Ended June 30,				Six Months Ended June 30,
(in thousands, except per share amounts)	2019		2018		2019		2018
Net income	$	17,137	$	46,148	$	23,697	$	60,745
Basic weighted-average shares outstanding		67,664		62,980		67,774		56,739
Incremental shares due to:
Performance shares		26		303		21		299
Restricted stock units		23		33		71		90
Diluted weighted-average shares outstanding		67,713		63,316		67,866		57,128
Basic net income per share	$	0.25	$	0.73	$	0.35	$	1.07
Diluted net income per share	$	0.25	$	0.73	$	0.35	$	1.06