Consolidated Statement of Changes in Stockholders' Equity (USD $) In Thousands, unless otherwise specified	Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Loss	Unallocated Common Stock Held by ESOP
Balance at Dec. 31, 2012	$ 1,293,989		$ 1,665	$ 884,689	$ 1,891,022	$ (1,406,755)	$ (73,090)	$ (3,542)
Increase (Decrease) in Stockholders' Equity
Net income	46,441				46,441
Other comprehensive loss, net of tax	(7,364)						(7,364)
Issuance of Preferred Stock, Series C (135,000 shares)	129,796	129,796
Dividends on common stock ($0.12 per share)	(11,750)				(11,750)
Dividends on preferred stock ($37.19 per share)	(5,021)				(5,021)
Restricted stock grants (536,110 shares)				(5,200)	(5,878)	11,078
Forfeitures of restricted stock (90,306 shares)				994	872	(1,866)
Stock-based compensation	5,272			5,222	50
Net tax benefit shortfall from stock-based compensation	(1,296)			(1,296)
Allocation of ESOP stock	7,849			5,137				2,712
Balance at Sep. 30, 2013	$ 1,457,916	$ 129,796	$ 1,665	$ 889,546	$ 1,915,736	$ (1,397,543)	$ (80,454)	$ (830)