Capital Stock (Tables)

12 Months Ended

Dec. 31, 2016

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, 2014	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 for stock compensation programs	—	—		(107,096	)	—			—			(5,654		)
Balances December 31, 2014	62,081,391	—		(24,633,081	)	$	148,401		$	—		$	(284,805	)
Restricted stock awards	—	—		34,624		(404		)	—			404
Restricted stock expense	—	—		—		3,461			—			—
Restricted stock forfeitures	—	—		(18,468	)	(426		)	—			—
Stock options exercised	—	—		52,708		1,714			—			216
Stock option expense	—	—		—		2,572			—			—
Stock option forfeitures	—	—		—		(118		)	—			—
Performance stock issued	—	—		52,839		(616		)	—			616
Performance stock expense	—	—		—		2,265			—			—
Performance stock forfeitures	—	—		—		(155		)	—			—
Employee stock purchase plan	—	—		11,517		352			—			136
Tax benefit related to stock plans	—	—		—		597			—			—
Treasury shares purchased for stock compensation programs	—	—		(59,056	)	—			—			(2,781		)
Share repurchase program	—	—		(150,000	)	—			—			(7,104		)
Balances December 31, 2015	62,081,391	—		(24,708,917	)	$	157,643		$	—		$	(293,318	)
Restricted stock awards	—	—		29,836		(355		)	—			355
Restricted stock expense	—	—		—		3,604			—			—
Restricted stock forfeitures	—	—		(2,800	)	(148		)	—			—
Stock options exercised	—	—		336,904		5,617			—			6,859
Stock option expense	—	—		—		2,484			—			—
Stock option forfeitures	—	—		—		(25		)	—			—
Performance stock issued	—	—		31,093		(371		)	—			371
Performance stock expense	—	—		—		3,324			—			—
Performance stock forfeitures	—	—		—		(28		)	—			—
Employee stock purchase plan	—	—		9,500		458			—			113
Tax benefit related to stock plans	—	—		—		478			—			—
Treasury shares purchased for stock compensation programs	—	—		(40,429	)	—			—			(1,881		)
Balances December 31, 2016	62,081,391	—		(24,344,813	)	$	172,681		$	—		$	(287,501	)