Consolidated Statements Of Income (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2012		Sep. 30, 2011
Interest income:
Loans	$ 83,110		$ 82,010		$ 248,488		$ 242,132
MBS	10,361		16,719		38,632		56,681
Investments and cash equivalents	2,520		2,650		7,826		8,150
Total interest income	95,991		101,379		294,946		306,963
Interest expense:
Deposits	8,981		14,135		30,004		46,645
Short-term borrowings	2,346		657		6,377		847
Long-term borrowings	9,356		11,751		29,994		36,085
Total interest expense	20,683		26,543		66,375		83,577
Net interest income	75,308		74,836		228,571		223,386
Provision for credit losses	2,000		6,000		10,000		26,000
Net interest income after provision for credit losses	73,308		68,836		218,571		197,386
Noninterest income:
Fees and service charges	14,675		12,332		41,546		37,839
Mortgage banking operations	28,502		16,360		69,318		37,481
Loan servicing fees	(2,092)		(4,694)		(183)		(2,884)
BOLI	1,660		1,612		7,175		4,922
Gains on sales of securities, net	3,129		0		12,592		14,298
Other-than-temporary impairment losses on securities	0	[1]	0	[1]	(6,819)	[1]	0	[1]
Charge on prepayment of debt	0		0		(2,664)		0
Gains on other loan sales	476		2,671		3,887		1,792
Other	348		831		(1,826)		(19)
Total noninterest income	46,698		29,112		123,026		93,429
Noninterest expense	89,408		86,620		265,664		266,515
Income before income taxes	30,598		11,328		75,933		24,300
Income tax benefit	0		0		288,842		0
Net income	$ 30,598		$ 11,328		$ 364,775		$ 24,300
Earnings per share - basic (in dollars per share)	$ 0.49		$ 0.18		$ 5.87		$ 0.39
Earnings per share - diluted (in dollars per share)	$ 0.49		$ 0.18		$ 5.81		$ 0.39
Common Stock, Dividends, Per Share, Declared	$ 0.15		$ 0.00		$ 0.15		$ 0.00
Weighted average shares outstanding - basic (in shares)	62,139,833		61,958,183		62,110,498		61,944,392
Weighted average shares outstanding - diluted (in shares)	62,845,864		62,041,203		62,745,177		62,236,465

[1] The other-than-temporary impairment recognized in earnings during the second quarter of 2012 did not have a portion recognized in accumulated other comprehensive income. See Note 3.