Income Taxes (Tables)

12 Months Ended

Dec. 31, 2011

Income Taxes [Abstract]

Current and Deferred Income Tax Expense (Benefit)

		Years Ended December 31,
		2011		2010		2009
		($ in Thousands)
Current:
	Federal	$	9,336	$	(91,578)	$	(45,496)
	State		(350)		598		27,083
Total current			8,986		(90,980)		(18,413)
Deferred:
	Federal		37,553		54,046		(91,136)
	State		(2,811)		(3,238)		(43,691)
Total deferred			34,742		50,808		(134,827)
Total income tax expense (benefit)		$	43,728	$	(40,172)	$	(153,240)

Schedule of Deferred Tax Assets and Liabilities

		2011		2010
		($ in Thousands)
Gross deferred tax assets:
	Allowance for loan losses	$	146,027	$	160,786
	Allowance for other losses		13,714		12,154
	Accrued liabilities		11,506		6,548
	Deferred compensation		24,638		23,188
	Securities valuation adjustment		17,978		18,964
	Benefit of tax loss and credit carryforwards		51,835		78,968
	Nonaccrual interest		4,042		7,460
	Other		7,017		4,185
Total gross deferred tax assets			276,757		312,253
Valuation allowance for deferred tax assets			-		(5,984)
			276,757		306,269
Gross deferred tax liabilities:
	FHLB stock dividends		10,424		10,276
	Prepaid expenses		49,828		43,467
	Intangible amortization		28,274		27,382
	Mortgage banking activities		4,796		14,213
	Deferred loan fee income		22,914		21,850
	State income taxes		20,418		22,656
	Leases		3,955		5,246
	Depreciation		23,368		13,593
	Other		1,805		1,869
Total gross deferred tax liabilities			165,782		160,552
Net deferred tax assets			110,975		145,717
Tax effect of unrealized gain related to available for sale securities			(62,447)		(32,092)
Tax effect of unrealized loss related to pension and postretirement benefits			21,219		15,482
			(41,228)		(16,610)
Net deferred tax assets including tax effected items		$	69,747	$	129,107

Summary of Valuation Allowance

		2011		2010
		($ in Thousands)
Valuation allowance for deferred tax assets, beginning of year		$	5,984	$	5,935
	Increase (decrease) in current year		(5,984)		49
Valuation allowance for deferred tax assets, end of year		$	-	$	5,984

Schedule of Effective Income Tax Rate Reconciliation

		2011		2010		2009
Federal income tax rate at statutory rate		35.0	%	35.0	%	35.0	%
Increases (decreases) resulting from:
	Tax-exempt interest and dividends	(7.0)		34.1		5.1
	State income taxes (net of federal income taxes)	3.8		4.2		3.8
	Bank owned life insurance	(2.8)		13.3		1.9
	Valuation allowance	(3.3)		(0.5)		6.1
	Federal tax credits	(0.9)		3.9		0.6
	Tax reserve adjustments	(0.6)		10.8		2.4
	Compensation deduction limitations	0.7		(4.8)		(0.4)
	Other	(1.1)		1.9		(0.7)
Effective income tax rate		23.8	%	97.9	%	53.8	%

Summary Unrecognized Tax Benefits

	2011		2010
	($ in Millions)
Balance at beginning of year	$	23	$	30
Changes in tax positions for prior years		5		-
Settlements		-		(1)
Statute expiration		(7)		(6)
Balance at end of year	$	21	$	23