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Stock-based Compensation Plan (Tables)
12 Months Ended
Dec. 31, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Activity for restricted stock units
The following table summarizes the restricted stock unit activity for the year ended December 31, 2019:
Restricted
Stock
Units
Weighted-
Average
Grant Date
Fair Value
Non-vested at December 31, 2018181,983  $36.03  
Granted101,978  42.96  
Vested(103,473) 34.17  
Forfeited(3,827) 40.80  
Non-vested at December 31, 2019176,661  41.01  
Activity for stock options
Changes in shares granted for stock options for the year ended December 31, 2019 are summarized as follows:
Stock
Options
Weighted-
Average
Exercise
Price
Outstanding at December 31, 201826,167  $25.84  
Acquisitions235,246  16.70  
Exercised(175,161) 16.53  
Forfeited(2,787) 25.84  
Outstanding at December 31, 201983,465  19.61  
Exercisable at December 31, 201972,315  18.65