Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2013

Mar. 31, 2012

Stockholders' Equity Note [Abstract]

Schedule of Stockholders Equity

	Preferred stock		Preference stock		Common stock		Additional paid-in capital			Retained earnings			Accumulated other comprehensive loss			Treasury stock			Total equity
Balance at January 1, 2013	$	4	$	648	$	323,338	$	223,847		$	4,744,802		$	(681,213	)	$	(4,500,795	)	$	110,631
Net income	—		—		—		—			67,506			—			—			67,506
Other comprehensive income	—		—		—		—			—			(30,761		)	—			(30,761		)
Cash dividends
Common ($1.125 per share)	—		—		—		—			(75,334		)	—			—			(75,334		)
Preference	—		—		—		—			(13		)	—			—			(13		)
Issuances of common stock	—		—		—		(24,097		)	—			—			21,551			(2,546		)
Stock-based compensation expense	—		—		—		3,704			—			—			—			3,704
Balance at March 31, 2013	$	4	$	648	$	323,338	$	203,454		$	4,736,961		$	(711,974	)	$	(4,479,244	)	$	73,187

	Preferred stock		Preference stock			Common stock		Additional paid-in capital			Retained earnings			Accumulated other comprehensive loss			Treasury stock			Total equity
Balance at January 1, 2012	$	4	$	659		$	323,338	$	240,584		$	4,600,217		$	(661,645	)	$	(4,542,143	)	$	(38,986	)
Net income	—		—			—		—			158,670			—			—			158,670
Other comprehensive income	—		—			—		—			—			44,539			—			44,539
Cash dividends
Common ($1.11 per share)	—		—			—		—			(74,925		)	—			—			(74,925		)
Preference	—		—			—		—			(13		)	—			—			(13		)
Issuances of common stock	—		—			—		(18,931		)	—			—			16,352			(2,579		)
Conversions to common stock	—		(6		)	—		(121		)	—			—			127			—
Stock-based compensation expense	—		—			—		4,337			—			—			—			4,337
Balance at March 31, 2012	$	4	$	653		$	323,338	$	225,869		$	4,683,949		$	(617,106	)	$	(4,525,664	)	$	91,043