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Employee Stock Benefit Plans (Tables)
12 Months Ended
Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Summary of activity regarding active stock option and stock award plans
The following table shows the combined summary of activity regarding active stock option and stock award plans.
 
 
 
Non-Vested Stock Awards Outstanding
 
Stock Options Outstanding
 
Shares Available for Grant
 
Number of Shares
 
Weighted-Average Grant-Date Fair Value
 
Number of Shares
 
Weighted-Average Exercise Price
Balance, January 1, 2011
2,319,648

 
438,610

 
$
16.92

 
62,508

 
$
17.18

Shares authorized - 2011 EIP
190,515

 

 

 

 

Shares authorized - 2011 Stock Option Plan
2,000,000

 

 

 

 

Shares authorized - 1982 Restricted Stock Plan
100,000

 

 

 

 

Shares authorized - 1998 Performance Compensation Plan
100,000

 

 

 

 

Granted
(261,523
)
 
261,523

 
20.15

 

 

Stock options exercised

 

 

 
(5,090
)
 
19.15

Stock awards vested

 
(121,744
)
 
17.08

 

 

Forfeited
1,029

 
(47,541
)
 
13.71

 
(35,418
)
 
20.09

Canceled
(2,129,177
)
 

 

 

 

Balance, December 31, 2011
2,320,492

 
530,848

 
18.76

 
22,000

 
12.04

 
 
 
 
 
 
 
 
 
 
Shares authorized - 2012 EIP
76,815

 

 

 

 

Shares authorized - 1998 Performance Compensation Plan
2,302

 

 

 

 

Granted
(98,617
)
 
98,617

 
21.95

 

 

Stock options exercised

 

 

 
(14,500
)
 
12.04

Stock awards vested

 
(190,674
)
 
17.24

 

 

Forfeited
4,124

 
(5,587
)
 
19.71

 

 

Canceled

 

 

 

 

Balance, December 31, 2012
2,305,116

 
433,204

 
20.15

 
7,500

 
12.04

 
 
 
 
 
 
 
 
 
 
Shares authorized - 2013 EIP
61,970

 

 

 

 

Shares authorized - 1998 Performance Compensation Plan
2,010

 

 

 

 

Granted
(88,980
)
 
88,980

 
24.19

 

 

Stock options exercised

 

 

 
(7,500
)
 
12.04

Stock awards vested

 
(85,985
)
 
19.58

 

 

Forfeited
5,642

 
(10,754
)
 
20.71

 

 

Canceled

 

 

 

 

Balance, December 31, 2013
2,285,758

 
425,445

 
$
21.09

 

 
$