Earnings per Share (Tables)

6 Months Ended

Jun. 30, 2016

Earnings Per Share [Abstract]

Summary of Basic and Diluted Weighted Average Shares Outstanding

The following table presents information about basic and diluted weighted average shares outstanding:

	Three months ended				Six months ended
	June 30,				June 30,
( in thousands )	2016		2015		2016		2015
Basic weighted average shares outstanding		129,562		129,225		129,434		130,237
Effect of dilutive securities:
Unvested share units and shares held by employees		230		183		212		168
Stock options held by employees and directors		349		460		325		493
Diluted weighted average shares outstanding		130,141		129,868		129,971		130,898
Anti-dilutive share awards		881		727		1,296		532