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Equity Compensation Plans (Tables)
 3 Months Ended
Mar. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Summary Of Outstanding And Exercisable Options
The following table is a summary of outstanding and exercisable options as of March 31, 2017:
In thousands except per share
amounts and years
 
Shares
 
Weighted-
Average
Exercise Price
 
Weighted-
Average
Remaining
Contractual
Term
(years)
 
Aggregate
Intrinsic Value
Outstanding at March 31, 2017
 
415

 
$
25.69

 
6.7
 
$
11,988

Exercisable at March 31, 2017
 
233

 
$
16.04

 
5.4
 
$
8,738

Unvested at March 31, 2017
 
182

 
$
38.00

 
8.5
 
$
3,250