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Retirement and Share-based Compensation Plans (Tables)
 12 Months Ended
Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Share-based Compensation Expense By Plan
The following table summarizes compensation expense recognized for employees, directors and consultants as a result of share-based compensation:
 
Year Ended December 31,
 
2016
 
2015
 
2014
 
(Dollars in thousands)
ESOP
$
2,522

 
$
2,604

 
$
2,486

Employee Incentive Plans
1,207

 
1,911

 
1,306

Director Equity and Incentive Plan and Stock Option Plan
685

 
613

 
789

 
$
4,414

 
$
5,128

 
$
4,581
Schedule of Stock Options Outstanding
Changes in the number of stock options outstanding during the years ended December 31, 2016, 2015 and 2014 are as follows:
 
Number of
Shares
 
Weighted-Average
Exercise Price
per Share
 
Total
Exercise
Price
 
(Dollars in thousands, except per share data)
Outstanding at January 1, 2014
3,976,725

 
$
10.86

 
$
43,171

Granted
1,277,650

 
24.79

 
31,673

Canceled
(35,400
)
 
11.64

 
(412
)
Exercised
(1,174,800
)
 
11.64

 
(13,672
)
Outstanding at December 31, 2014
4,044,175

 
15.02

 
60,760

Granted
—

 
—

 
—

Canceled
(47,300
)
 
10.54

 
(499
)
Exercised
(552,884
)
 
14.51

 
(8,021
)
Outstanding at December 31, 2015
3,443,991

 
15.17

 
52,240

Granted
—

 
—

 
—

Canceled
(24,700
)
 
14.83

 
(366
)
Exercised
(500,345
)
 
9.97

 
(4,989
)
Outstanding at December 31, 2016
2,918,946

 
16.06

 
$
46,885
Schedule of Stock Options Outstanding, By Exercise Price Range
The following table summarizes information about stock options outstanding at December 31, 2016:
 
 
Stock Options Outstanding
 
Stock Options Vested
Range of Exercise Prices
 
Number of
Awards
 
Remaining
Life (yrs)
 
Weighted-Average
Exercise Price
Per Share
 
Number of
Awards
 
Remaining
Life (yrs)
 
Weighted-Average
Exercise Price
Per Share
$5.07 - $8.02
 
248,225

 
1.74
 
$
7.16

 
248,225

 
1.74
 
$
7.16

$9.27 - $11.35
 
752,150

 
2.66
 
10.19

 
752,150

 
2.66
 
10.19

$12.04 - $24.79
 
1,918,571

 
3.24
 
19.52

 
1,918,571

 
3.24
 
19.52

$5.07 - $24.79
 
2,918,946

 
2.97
 
16.06

 
2,918,946

 
2.97
 
16.06