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Share-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Summary of Stock Option Assumptions
The following weighted average assumptions were used to determine the fair value of the stock options granted on the original grant date for expense recognition purposes for options granted during the six months ended June 30, 2017 and 2016 using a Black Scholes Model:
 
 
Six months ended
 
June 30, 2017
 
June 30, 2016
Director and Officers:
 
 
 
Expected dividend rate
$
0.26

 
$
0.22

Expected volatility
30.81
%
 
42.38
%
Risk-free interest rate
1.90
%
 
2.02
%
Expected life (in years)
5.0

 
8.0

 
 
 
 
Employees:
 

 
 

Expected dividend rate
$
0.26

 
$
0.22

Expected volatility
30.75
%
 
41.82
%
Risk-free interest rate
1.89
%
 
1.76
%
Expected life (in years)
5.0

 
8.0

Summary of Stock Options Outstanding
The following is a summary of stock options vested and exercisable as of June 30, 2017:
 
Range of
Exercise
Prices
 
Number
of
Shares
 
Weighted
Average
Remaining
Contractual Life
(in years)
 
Weighted
Average
Exercise
Price
 
Intrinsic
Value
(in thousands)
$4.54-$22.76
 
378,504

 
4.85

 
$
10.98

 
$
9,792

$23.57-$32.80
 
33,985

 
7.95

 
25.34

 
391

$32.85-$37.30
 

 

 

 

Total
 
412,489

 
5.10

 
$
12.16

 
$
10,183

 
The following is a summary of stock options vested and exercisable as of June 30, 2016:

Range of
Exercise
Prices
 
Number
of
Shares
 
Weighted
Average
Remaining
Contractual Life
(in years)
 
Weighted
Average
Exercise
Price
 
Intrinsic
Value
(in thousands)
$4.54-$8.65
 
344,958

 
5.06
 
$
7.67

 
$
6,843

$8.70-$22.76
 
37,505

 
7.39
 
15.77

 
440

$23.57-$28.27
 
7,664

 
8.66
 
23.57

 
30

Total
 
390,127

 
5.35
 
$
8.76

 
$
7,313

Summary of Stock Option Activity
A summary of option activity under the plans is as follows:

Options
Shares
 
Weighted
Average
Exercise
Price
Outstanding at December 31, 2016
1,450,704

 
$
21.33

Granted
389,660

 
34.42

Exercised
(154,368
)
 
10.19

Forfeited or Expired
(64,886
)
 
30.51

Outstanding at June 30, 2017
1,621,110

 
$
25.17

Exercisable at June 30, 2017
412,489

 
$
12.16

Summary of Unvested Restricted Stock Awards
A summary of the unvested restricted stock awards is as follows:
 
Restricted stock
Shares
 
Weighted
Average
Grant Date
Fair Value
Unvested at December 31, 2016
408,162

 
$
20.47

Granted
123,151

 
33.96

Vested
(121,956
)
 
21.09

Forfeited
(16,161
)
 
22.86

Unvested at June 30, 2017
393,196

 
$
24.41

Summary of Grant Date Fair Value of Awards During Period
A summary of share-based compensation is as follows:
 
 
Three months ended
 
Six months ended
 
June 30,
2017
 
June 30,
2016
 
June 30,
2017
 
June 30,
2016
Grant date fair value of awards during the period:
(in thousands)
Options
$
633

 
$
1,279

 
$
3,507

 
$
2,059

Restricted stock
1,582

 
1,043

 
4,182

 
2,942

Total
$
2,215

 
$
2,322

 
$
7,689

 
$
5,001

Summary of Share-Based Compensation Expense
Share-based compensation expense:
 
 
 
 
 
 
 
Options
$
703

 
$
404

 
$
1,430

 
$
741

Restricted stock
1,181

 
691

 
2,099

 
1,302

Total
$
1,884

 
$
1,095

 
$
3,529

 
$
2,043

Summary of Income Tax Benefit Related to Share-Based Compensation
Income tax benefit/(deficiency) related to share-based compensation:
 
 
 
 
 
 
 
Options
$
494

 
$
417

 
$
1,285

 
$
1,130

Restricted stock
432

 
(33
)
 
705

 
(1
)
Total
$
926

 
$
384

 
$
1,990

 
$
1,129

Schedule of Quantitative Effects on Consolidated Financial Statements
The following table displays the prior period quantitative effects on the consolidated financial statements:
 
Three months ended
 
Six months ended
 
June 30,
2016
 
June 30,
2016
 
As Reported
 
As Restated
 
As Reported
 
As Restated
 
(in thousands, except share and per share data)
Consolidated Statement of Income
 
 
 
 
 
 
 
Income tax provision
$
7,934

 
$
7,550

 
$
14,145

 
$
13,016

Net income
14,341

 
14,725

 
25,147

 
26,276

Earnings per share:


 


 


 


     Basic
$
0.27

 
$
0.28

 
$
0.47

 
$
0.47

     Diluted
0.27

 
0.27

 
0.47

 
0.47

Weighted average shares outstanding:
 
 
 
 
 
 
 
     Diluted
53,401,238

 
53,574,702

 
53,395,361

 
53,563,676

 
 
 
 
 
 
 
 
Consolidated Statement of Cash Flows
 
 
 
 
 
 
 
Change in income taxes


 


 
$
5,162

 
$
4,033