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Share-Based Compensation (Tables)
 6 Months Ended
Jun. 30, 2019
Share-based Payment Arrangement [Abstract]  
Stock option activity
The following table provides information regarding stock option award activity for the six months ended June 30, 2019:
 
Shares
 
Wtd. Avg. Exer. Price
Options outstanding, beginning of period
644,575

 
$
28.28

Options forfeited
(4,197
)
 
$
27.00

Options canceled in Equity Award Exchange
(201,406
)
 
$
31.14

Options expired
(68,987
)
 
$
23.69

Options outstanding, end of period
369,985

 
$
27.59

Options exercisable, end of period
130,601

 
$
28.42
Restricted stock activity
The following table provides information regarding restricted stock unit award activity for the six months ended June 30, 2019:
 
Shares
 
Grant Date Price
Restricted stock units outstanding, beginning of period
340,678

 
$
27.64

Restricted stock units granted
115,957

 
$
20.13

Restricted stock units granted under Equity Award Exchange
99,500

 
$
16.70

Restricted stock united canceled under Equity Award Exchange
(24,622
)
 
$
31.14

Restricted stock units forfeited
(16,342
)
 
$
26.81

Restricted stock units vested
(80,425
)
 
$
26.46

Restricted stock units outstanding, end of period
434,746

 
$
23.14