CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (USD $) In Thousands, unless otherwise specified	Total	Series C Preferred Stock	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Loss	Unallocated Common Stock Held by ESOP
Balance at beginning of period at Dec. 31, 2011	$ 1,251,198	$ 0	$ 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, net of tax	2,571						2,571
Dividends on common stock	(24,104)				(24,104)
Restricted stock grants				(1,541)	(1,703)	3,244
Forfeitures of restricted stock				3,918	1,770	(5,688)
Stock-based compensation	5,166			4,790	376
Net tax benefit (shortfall) excess from stock-based compensation	(4,123)			(4,123)
Allocation of ESOP stock	10,190			6,250				3,940
Balance at end of period at Dec. 31, 2012	1,293,989	0	1,665	884,689	1,891,022	(1,406,755)	(73,090)	(3,542)
Increase (Decrease) in Stockholders' Equity
Net income	66,593				66,593
Other comprehensive income, net of tax	34,840						34,840
Issuance of preferred stock, series C	129,796	129,796
Dividends on preferred stock	(7,214)				(7,214)
Dividends on common stock	(15,667)				(15,667)
Restricted stock grants				(5,200)	(5,878)	11,078
Forfeitures of restricted stock				1,234	1,110	(2,344)
Stock-based compensation	6,969			6,909	60
Net tax benefit (shortfall) excess from stock-based compensation	(800)			(800)
Allocation of ESOP stock	11,007			7,465				3,542
Balance at end of period at Dec. 31, 2013	1,519,513	129,796	1,665	894,297	1,930,026	(1,398,021)	(38,250)	0
Increase (Decrease) in Stockholders' Equity
Net income	95,916				95,916
Other comprehensive income, net of tax	(27,701)						(27,701)
Dividends on preferred stock	(8,775)				(8,775)
Dividends on common stock	(15,868)				(15,868)
Sales of treasury stock	8,121				(4,595)	12,716
Restricted stock grants				(6,472)	(4,160)	10,632
Forfeitures of restricted stock				374	275	(649)
Stock-based compensation	8,672			8,658	14
Net tax benefit (shortfall) excess from stock-based compensation	192			192
Balance at end of period at Dec. 31, 2014	$ 1,580,070	$ 129,796	$ 1,665	$ 897,049	$ 1,992,833	$ (1,375,322)	$ (65,951)	$ 0