CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (USD $) In Thousands, except Share data, unless otherwise specified		Preferred stock	Common stock	Additional paid-in capital	Accumulated other comprehensive income (loss)	Retained earnings	Treasury shares	Total
Balance at Dec. 31, 2011			$ 53,886	$ 489,200	$ 72,372	$ 1,611,969	$ (82,578)	$ 2,144,849
Balance (in shares) at Dec. 31, 2011			53,885,886
Increase (Decrease) in Stockholders' Equity
Net income	[1]					208,049		208,049
Other comprehensive income (loss), net of tax					14,210			14,210
Issuance of preferred stock		169,920						169,920
Issuance of shares under share-based compensation plans				(27,987)			48,210	20,223
Share-based employee compensation expense				17,350				17,350
Tax benefit from share-based compensation plans				2,118				2,118
Dividends: Common						(81,061)		(81,061)
Net change in deferred compensation plans				957			2	959
Change in redeemable noncontrolling interest				353				353
Other	[2]			8,348				8,348
Balance at Dec. 31, 2012		169,920	53,886	490,339	86,582	1,738,957	(34,366)	2,505,318
Balance (in shares) at Dec. 31, 2012			53,885,886
Increase (Decrease) in Stockholders' Equity
Net income	[1]					230,009		230,009
Other comprehensive income (loss), net of tax					(102,223)			(102,223)
Issuance of preferred stock		97,696						97,696
Issuance of shares under share-based compensation plans			781	26,878			9,338	36,997
Issuance of shares under share-based compensation plans (in shares)			781,409
Share-based employee compensation expense				17,743				17,743
Tax benefit from share-based compensation plans				4,615				4,615
Dividends : Preferred						(9,625)		(9,625)
Dividends: Common						(41,178)		(41,178)
Net change in deferred compensation plans				856			(1)	855
Change in redeemable noncontrolling interest				779				779
Balance at Dec. 31, 2013		267,616	54,667	541,210	(15,641)	1,918,163	(25,029)	2,740,986
Balance (in shares) at Dec. 31, 2013			54,667,295
Increase (Decrease) in Stockholders' Equity
Net income	[1]					255,819		255,819
Other comprehensive income (loss), net of tax					8,567			8,567
Issuance of shares under share-based compensation plans			490	20,232			2,755	23,477
Issuance of shares under share-based compensation plans (in shares)			490,466
Share-based employee compensation expense				17,518				17,518
Tax benefit from share-based compensation plans				3,044				3,044
Dividends : Preferred						(16,375)		(16,375)
Dividends: Common						(73,246)		(73,246)
Net change in deferred compensation plans			5	986			(5)	986
Net change in deferred compensation plans (in shares)			4,694
Change in redeemable noncontrolling interest				(4,944)				(4,944)
Balance at Dec. 31, 2014		$ 267,616	$ 55,162	$ 578,046	$ (7,074)	$ 2,084,361	$ (22,279)	$ 2,955,832
Balance (in shares) at Dec. 31, 2014			55,162,455

[1] Net income excludes net income attributable to redeemable noncontrolling interest of $2,770, $2,507 and $1,084 for 2014, 2013 and 2012, respectively. Redeemable noncontrolling interest is reflected in the mezzanine section of the consolidated balance sheets. See Note 22 of the Notes to Consolidated Financial Statements.

[2] Conversion of pension liability to equity. See Note 18 for additional information.