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Capital Stock (Tables)
 12 Months Ended
Dec. 31, 2014
Disclosure Capital Stock Additional Information [Abstract]  
Schedule Of Common Stock Activity
Common stock activity is summarized as follows:

 
Shares
 
Dollars
(Dollars in thousands)
Issued
 
Stock
Compensation
Trust
 
Treasury
 
Common
Stock
 
Stock
Compensation
Trust
 
Treasury
Cost
Balances January 1, 2012
62,081,391

 
(1,162,784
)
 
(24,226,017
)
 
$
97,276

 
$
(6,070
)
 
$
(264,479
)
Restricted stock awards
—

 
136,295

 
—

 
(711
)
 
711

 
—

Restricted stock expense
—

 
—

 
—

 
4,891

 
—

 
—

Restricted stock forfeitures
—

 
—

 
(10,815
)
 
(147
)
 
—

 
—

Stock options exercised
—

 
223,022

 
—

 
3,141

 
1,165

 
—

Stock option expense
—

 
—

 
—

 
2,435

 
—

 
—

Performance stock issued
—

 
58,037

 
—

 
(303
)
 
303

 
—

Performance stock expense
—

 
—

 
—

 
2,831

 
—

 
—

Tax benefit related to stock plans
—

 
—

 
—

 
2,799

 
—

 
—

Treasury shares purchased
—

 
—

 
(91,330
)
 
—

 
—

 
(3,508
)
Other, net
—

 
—

 
—

 
(77
)
 
—

 
—

Balances December 31, 2012
62,081,391

 
(745,430
)
 
(24,328,162
)
 
112,135

 
(3,891
)
 
(267,987
)
Restricted stock awards
—

 
96,686

 
—

 
(505
)
 
505

 
—

Restricted stock expense
—

 
—

 
—

 
4,244

 
—

 
—

Restricted stock forfeitures
—

 
—

 
(7,365
)
 
(115
)
 
—

 
—

Stock options exercised
—

 
277,687

 
—

 
8,194

 
1,449

 
—

Stock option expense
—

 
—

 
—

 
2,825

 
—

 
—

Performance stock issued
—

 
67,389

 
—

 
(352
)
 
352

 
—

Performance stock expense
—

 
—

 
—

 
3,383

 
—

 
—

Tax benefit related to stock plans
—

 
—

 
—

 
2,246

 
—

 
—

Treasury shares purchased
—

 
—

 
(240,097
)
 
—

 
—

 
(11,785
)
Balances December 31, 2013
62,081,391

 
(303,668
)
 
(24,575,624
)
 
132,055

 
(1,585
)
 
(279,772
)
Restricted stock awards
—

 
72,291

 
13,936

 
(538
)
 
377

 
161

Restricted stock expense
—

 
—

 
—

 
4,372

 
—

 
—

Restricted stock forfeitures
—

 
—

 
(4,078
)
 
(346
)
 
—

 
—

Stock options exercised
—

 
150,962

 
39,781

 
5,678

 
788

 
460

Stock option expense
—

 
—

 
—

 
2,355

 
—

 
—

Performance stock issued
—

 
80,415

 


 
(420
)
 
420

 
—

Performance stock expense
—

 
—

 
—

 
2,705

 
—

 
—

Performance stock forfeitures
—

 
—

 
—

 
(33
)
 
—

 
—

Tax benefit related to stock plans
—

 
—

 
—

 
2,573

 
—

 
—

Treasury shares purchased
—

 
—

 
(107,096
)
 
—

 
—

 
(5,654
)
Balances December 31, 2014
62,081,391

 
—

 
(24,633,081
)
 
148,401

 
—

 
(284,805
)