CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (USD $) In Thousands, unless otherwise specified	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Loss	Unallocated Common Stock Held by ESOP
Balance at Dec. 31, 2009	$ 1,208,614	$ 1,665	$ 857,662	$ 1,829,199	$ (1,434,362)	$ (29,779)	$ (15,771)
Increase (Decrease) in Stockholders' Equity
Net income	73,734			73,734
Other comprehensive income (loss), net of tax	(12,382)					(12,382)
Dividends on common stock ($0.25 per share 2012, $0.52 per share in 2011 and 2010)	(48,692)			(48,692)
Restricted stock grants (157,000 shares 2012, 685,650 shares in 2011 and 806,428 shares in 2010)			(10,484)	(6,181)	16,665
Forfeitures of restricted stock (275,397 shares in 2012, 25,404 shares in 2011 and 24,566 shares in 2010)			360	147	(507)
Exercise of stock options (12,000 shares issued)	112			(136)	248
Stock-based compensation	8,003		7,979	24
Net tax benefit excess (shortfall) from stock-based compensation	776		776
Allocation of ESOP stock	11,615		8,451				3,164
Balance at Dec. 31, 2010	1,241,780	1,665	864,744	1,848,095	(1,417,956)	(42,161)	(12,607)
Increase (Decrease) in Stockholders' Equity
Net income	67,209			67,209
Other comprehensive income (loss), net of tax	(33,500)					(33,500)
Dividends on common stock ($0.25 per share 2012, $0.52 per share in 2011 and 2010)	(49,435)			(49,435)
Restricted stock grants (157,000 shares 2012, 685,650 shares in 2011 and 806,428 shares in 2010)			(9,698)	(4,471)	14,169
Forfeitures of restricted stock (275,397 shares in 2012, 25,404 shares in 2011 and 24,566 shares in 2010)			357	167	(524)
Stock-based compensation	9,035		9,008	27
Net tax benefit excess (shortfall) from stock-based compensation	(263)		(263)
Allocation of ESOP stock	16,372		11,247				5,125
Balance at Dec. 31, 2011	1,251,198	1,665	875,395	1,861,592	(1,404,311)	(75,661)	(7,482)
Increase (Decrease) in Stockholders' Equity
Net income	53,091			53,091
Other comprehensive income (loss), net of tax	2,571					2,571
Dividends on common stock ($0.25 per share 2012, $0.52 per share in 2011 and 2010)	(24,104)			(24,104)
Restricted stock grants (157,000 shares 2012, 685,650 shares in 2011 and 806,428 shares in 2010)			(1,541)	(1,703)	3,244
Forfeitures of restricted stock (275,397 shares in 2012, 25,404 shares in 2011 and 24,566 shares in 2010)			3,918	1,770	(5,688)
Stock-based compensation	5,166		4,790	376
Net tax benefit excess (shortfall) from stock-based compensation	(4,123)		(4,123)
Allocation of ESOP stock	10,190		6,250				3,940
Balance at Dec. 31, 2012	$ 1,293,989	$ 1,665	$ 884,689	$ 1,891,022	$ (1,406,755)	$ (73,090)	$ (3,542)