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Employee Share Plans (Tables)
 3 Months Ended
Mar. 31, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]  
Schedule of Share-Based Compensation Awards

Compensation expense for stock-based awards recognized during the three months ended March 31, 2018 and 2017 was as follows (in thousands):

 

 

 

Three Months Ended

 

 

 

March 31,

 

 

 

2018

 

 

2017

 

Stock options

 

$

518

 

 

$

525

 

Restricted stock awards

 

 

919

 

 

 

849

 

Total stock-based compensation expense

 

$

1,437

 

 

$

1,374

 

 
Stock Award Activity

Stock award activity during the three months ended March 31, 2018 was as follows (in thousands, except per share data):

 

 

 

Stock Options

 

 

Restricted Stock Awards

 

 

 

Number of

Options

 

 

Weighted Average Exercise Price

Per Share

 

 

Number of

Shares

 

 

Weighted Average

Grant-Date

Fair Value (1)

 

Outstanding at beginning of year

 

 

3,844

 

 

$

9.67

 

 

 

724

 

 

$

11.78

 

Granted

 

 

—

 

 

$

—

 

 

 

56

 

 

$

16.15

 

Exercised / Vested

 

 

(339

)

 

$

6.69

 

 

 

(80

)

 

$

11.45

 

Expired or canceled

 

 

—

 

 

$

—

 

 

 

—

 

 

$

—

 

Outstanding at March 31, 2018

 

 

3,505

 

 

$

9.96

 

 

 

700

 

 

$

12.16

 

Exercisable at March 31, 2018

 

 

1,667

 

 

$

8.08

 

 

 

 

 

 

 

 

 

 

 

(1)

Represents weighted average market value of the shares; awards are granted at no cost to the recipients.