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Stock-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2019
Stock-Based Compensation [Abstract]  
Unvested Restricted Stock Units Activity
The Company has outstanding restricted stock granted from various plans at December 31, 2019. The Company recognized $4.2 million, $3.9 million and $3.5 million in stock-based compensation expense related to these stock awards for the years ended December 31, 2019, 2018 and 2017, respectively. Tax benefits recognized with respect to restricted stock awards and stock units were $1.1 million, $1.2 million and $2.5 million for the years ended December 31, 2019, 2018 and 2017, respectively. Unrecognized compensation cost related to restricted stock units totaled $5.5 million at December 31, 2019 and will be recognized over 1.8 years on a weighted average basis. Shares issued are funded from the Company’s treasury stock. The following table summarizes information for unvested restricted stock units outstanding as of December 31, 2019:


  
Number of
Shares
    
Weighted-
Average Grant
Date Fair Value
  
Unvested at January 1, 2019
    
546,054
    
$
28.39
  
Forfeited
    
(10,886
)
    
31.06
  
Vested
    
(121,774
)
    
25.66
  
Granted
    
142,046
      
33.04
  
Unvested at December 31, 2019
    
555,440
    
$
30.11
  
Stock Option Activity The following table summarizes information concerning stock options outstanding:

(In thousands, except share and per share data)
  
Number of
Shares
    
Weighted
Average
Exercise Price
    
Weighted
Average
Remaining
Contractual
Term (in
Years)
    
Aggregate
Intrinsic
Value
  
Outstanding at January 1, 2019
    
66,900
    
$
23.07
              
Exercised
    
(32,505
)
    
22.31
              
Expired
    
(1,250
)
    
25.38
              
Outstanding at December 31, 2019
    
33,145
    
$
23.73
      
1.86
    
$
558,066
  
                                 
Exercisable at December 31, 2019
    
33,145
    
$
23.73
      
1.86
    
$
558,066
  
Cash Proceeds, Tax Benefits and Intrinsic Value of Stock Options Exercised
Total stock-based compensation expense for stock option awards totaled $1 thousand, $11 thousand and $18 thousand for the years ended December 31, 2019, 2018 and 2017, respectively. Cash proceeds, tax benefits and intrinsic value related to total stock options exercised is as follows: 


  
Years ended December 31,
  
(In thousands)
  
2019
    
2018
    
2017
  
Proceeds from stock options exercised
  
$
725
    
$
999
    
$
3,083
  
Tax benefits related to stock options exercised
    
123
      
173
      
650
  
Intrinsic value of stock options exercised
    
490
      
692
      
1,699
  
Fair value of shares vested during the year
    
13
      
16
      
329