Equity Compensation Plans (Tables)

6 Months Ended

Jun. 30, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Outstanding and Exercisable Options

The following table is a summary of outstanding and exercisable options as of June 30, 2018:

In thousands except per share amounts	Shares	Weighted- Average Exercise Price		Aggregate Intrinsic Value
Outstanding at June 30, 2018	417	$	34.36	$	5,486
Exercisable at June 30, 2018	207	$	21.90	$	4,702
Unvested at June 30, 2018	210	$	46.64	$	784