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Stock Option And Stock Award Plans (Tables)
 12 Months Ended
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Summary Of Additional Information On Stock Options Outstanding And Exercisable
The following table summarizes additional information about stock options outstanding and exercisable at December 31, 2019:
 
 
 
 
 
 
Options Outstanding at December 31, 2019
 
Options Exercisable at December 31, 2019
 
 
 
 
 
 
 
 
Weighted Average
 
Aggregate Intrinsic Value
 
 
 
 
 
Aggregate Intrinsic Value
Range of
Exercise Prices
 
Shares
 
Remaining Contractual Life (Years)
 
Exercise
Price
 
 
Shares
 
Weighted
Average
Exercise
Price
 
$
—

 
to
 
$
15.00

 
—

 
0.0
 
$
—

 
$
—

 
—

 
$
—

 
$
—

15.01

 
to
 
17.50

 
163,641

 
4.4
 
15.65

 
1,096,395

 
104,326

 
15.65

 
698,984

17.51

 
to
 
20.00

 
1,255,670

 
5.3
 
18.83

 
4,424,405

 
46,300

 
19.40

 
136,585

20.01

 
to
 
25.00

 
209,592

 
3.5
 
23.69

 
—

 
209,592

 
23.69

 
—

Total
 
1,628,903

 
5.0
 
$
19.13

 
$
5,520,800

 
360,218

 
$
20.81

 
$
835,569
Summary Of Additional Information On Non-Vested Restricted Stock Outstanding
The following table summarizes additional information about unvested restricted stock outstanding at December 31, 2019, 2018 and 2017:
 
Unvested Restricted Stock
 
Maximum Unvested Restricted Stock Units Issuable Upon Satisfaction of Certain Performance Criteria
 
Number
of Shares
 
Weighted Avg. Grant Date Fair Value/Share
 
Grant Date
Fair Value
(In thousands)
 
Number
of Shares
 
Weighted Avg. Grant Date Fair Value/Share
 
Grant Date
Fair Value
(In thousands)
Outstanding at January 1, 2017
207,355

 
$
15.90

 
$
3,297

 
238,429

 
$
16.39

 
$
3,908

Granted
107,362

 
18.29

 
1,964

 
46,205

 
17.38

 
803

Vested
(50,154
)
 
19.72

 
(989
)
 
—

 
—

 
—

Forfeited
(57,887
)
 
16.16

 
(935
)
 
(112,501
)
 
17.73

 
(1,995
)
Outstanding at December 31, 2017
206,676

 
16.15

 
3,337

 
172,133

 
15.78

 
2,716

Granted
119,915

 
17.39

 
2,085

 
61,227

 
17.35

 
1,062

Vested
(64,702
)
 
18.31

 
(1,185
)
 
—

 
—

 
—

Forfeited
(17,153
)
 
15.84

 
(272
)
 
(48,651
)
 
13.23

 
(644
)
Outstanding at December 31, 2018
244,736

 
16.20

 
3,965

 
184,709

 
16.97

 
3,134

Granted
185,422

 
18.46

 
3,423

 
57,442

 
18.34

 
1,053

Vested
(117,834
)
 
14.76

 
(1,739
)
 
(69,926
)
 
10.96

 
(766
)
Forfeited
(26,389
)
 
16.11

 
(425
)
 
(24,562
)
 
11.51

 
(283
)
Outstanding at December 31, 2019
285,935

 
$
18.27

 
$
5,224

 
147,663

 
$
21.25

 
$
3,138