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Stock-based Compensation Plan (Tables)
 12 Months Ended
Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Activity for restricted stock awards
The following table summarizes the restricted stock award activity for the year ended December 31, 2016:
 
Restricted Stock
 
Weighted-
Average
Grant Date Fair Value
Non-vested at December 31, 2015
205,989

 
$
24.24

Granted
134,329

 
23.38

Vested
(115,070
)
 
22.80

Forfeited
(2,516
)
 
24.52

Non-vested at December 31, 2016
222,732

 
24.46