Fair Value Measurements (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2012

Dec. 31, 2011

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Assets and Liabilities Measured at Fair Value Using Significant Unobservable Inputs (Level 3)

Assets and Liabilities Measured at Fair Value
Using Significant Unobservable Inputs (Level 3)
($ in Thousands)			Investment Securities		Derivative Financial Instruments
			Available for Sale		Derivative Financial Instruments
Balance December 31, 2010			$	1,672	$	5,539
	Total net losses included in income:
		Impairment losses on investment securities		(816)		―
		Mortgage derivative loss		―		(5,739)
Balance December 31, 2011			$	856	$	(200)
	Total net gains (losses) included in income:
		Mortgage derivative gain		―		6,068
	Total net losses included in other comprehensive income:
		Investment securities losses		(255)		―
Balance March 31, 2012			$	601	$	5,868

Estimated fair values of financial instruments

		March 31, 2012
		Carrying				Fair Value Measurements Using
		Amount		Fair Value		Level 1		Level 2		Level 3
		($ in Thousands)
Financial assets:
Cash and due from banks	$	360,728	$	360,728	$	360,728	$	―	$	―
Interest-bearing deposits in other financial institutions		344,148		344,148		344,148		―		―
Federal funds sold and securities purchased under
agreements to resell		7,100		7,100		―		7,100		―
Investment securities available for sale		4,669,100		4,669,100		13,145		4,655,354		601
FHLB and Federal Reserve Bank stocks		177,808		177,808		―		177,808		―
Loans held for sale		196,570		199,087		―		199,087		―
Loans, net		13,897,427		13,432,367		―		―		13,432,367
Bank owned life insurance		546,894		546,894		―		546,894		―
Accrued interest receivable		66,176		66,176		66,176		―		―
Interest rate-related agreements ⁽¹⁾		67,891		67,891		―		67,891		―
Foreign currency exchange forwards		1,133		1,133		―		1,133		―
Interest rate lock commitments to originate residential
mortgage loans held for sale		6,755		6,755		―		―		6,755
Purchased options (time deposit)		4,078		4,078		―		4,078		―
Financial liabilities:
Noninterest-bearing demand, savings, interest-bearing
demand, and money market deposits	$	13,306,012	$	13,306,012	$	13,306,012	$	―	$	―
Brokered CDs and other time deposits		2,347,364		2,347,364		―		2,347,364		―
Short-term funding		1,936,219		1,936,219		―		1,936,219		―
Long-term funding		1,176,736		1,225,172		―		1,225,172		―
Accrued interest payable		6,357		6,357		6,357		―		―
Interest rate-related agreements ⁽¹⁾		75,297		75,297		―		75,297		―
Foreign currency exchange forwards		1,066		1,066		―		1,066		―
Standby letters of credit ⁽²⁾		3,583		3,583		―		3,583		―
Forward commitments to sell residential mortgage loans		887		887		―		―		887
Written options (time deposit)		4,078		4,078		―		4,078		―

		December 31, 2011
		Carrying				Fair Value Measurements Using
		Amount		Fair Value		Level 1		Level 2		Level 3
		($ in Thousands)
Financial assets:
Cash and due from banks	$	454,958	$	454,958	$	454,958	$	―	$	―
Interest-bearing deposits in other financial institutions		154,562		154,562		154,562		―		―
Federal funds sold and securities purchased under
agreements to resell		7,075		7,075		7,075		―		―
Investment securities available for sale		4,937,483		4,937,483		12,701		4,923,926		856
FHLB and Federal Reserve Bank stocks		191,188		191,188		―		191,188		―
Loans held for sale		249,195		255,201		―		255,201		―
Loans, net		13,652,920		12,751,626		―		―		12,751,626
Bank owned life insurance		544,764		544,764		―		544,764		―
Accrued interest receivable		68,920		68,920		68,920		―		―
Interest rate-related agreements ⁽¹⁾		71,143		71,143		―		71,143		―
Foreign currency exchange forwards		2,079		2,079		―		2,079		―
Interest rate lock commitments to originate residential
mortgage loans held for sale		4,571		4,571		―		―		4,571
Purchased options (time deposit)		2,854		2,854		―		2,854		―
Financial liabilities:
Noninterest-bearing demand, savings, interest-bearing
demand, and money market deposits	$	12,363,287	$	12,363,287	$	12,363,287	$	―	$	―
Brokered CDs and other time deposits		2,727,368		2,727,368		―		2,727,368		―
Short-term funding		2,514,485		2,514,485		―		2,514,485		―
Long-term funding		1,177,071		1,309,687		―		1,309,687		―
Accrued interest payable		15,931		15,931		15,931		―		―
Interest rate-related agreements ⁽¹⁾		80,075		80,075		―		80,075		―
Foreign currency exchange forwards		1,891		1,891		―		1,891		―
Standby letters of credit ⁽²⁾		3,648		3,648		―		3,648		―
Forward commitments to sell residential mortgage loans		4,771		4,771		―		―		4,771
Written options (time deposit)		2,854		2,854		―		2,854		―

Fair Value, Measurements, Recurring [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Assets and Liabilities Measured at Fair Value

Assets and Liabilities Measured at Fair Value on a Recurring Basis
					Fair Value Measurements Using
		March 31, 2012			Level 1		Level 2		Level 3
			($ in Thousands)
Assets:
Investment securities available for sale:
U.S. Treasury securities		$	1,001	$	1,001	$	―	$	―
Federal agency securities			8		8		―		―
Obligations of state and political subdivisions (municipal securities)			835,664		―		835,664		―
Residential mortgage-related securities			3,554,430		―		3,554,430		―
Commercial mortgage-related securities			19,303		―		19,303		―
Asset-backed securities			163,014		―		163,014		―
Other securities (debt and equity)			95,680		12,136		82,943		601
	Total investment securities available for sale	$	4,669,100	$	13,145	$	4,655,354	$	601
Derivatives (other assets)		$	79,857	$	―	$	73,102	$	6,755

Liabilities:
Derivatives (other liabilities)		$	81,328	$	―	$	80,441	$	887

					Fair Value Measurements Using
		December 31, 2011			Level 1		Level 2		Level 3
			($ in Thousands)
Assets:
Investment securities available for sale:
U.S. Treasury securities		$	1,001	$	1,001	$	―	$	―
Federal agency securities			24,049		41		24,008		―
Obligations of state and political subdivisions (municipal securities)			847,246		―		847,246		―
Residential mortgage-related securities			3,785,590		―		3,785,590		―
Commercial mortgage-related securities			18,543		―		18,543		―
Asset-backed securities			187,732		―		187,732		―
Other securities (debt and equity)			73,322		11,659		60,807		856
	Total investment securities available for sale	$	4,937,483	$	12,701	$	4,923,926	$	856
Derivatives (other assets)		$	80,647	$	―	$	76,076	$	4,571

Liabilities:
Derivatives (other liabilities)		$	89,591	$	―	$	84,820	$	4,771

Fair Value, Measurements, Nonrecurring [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Assets and Liabilities Measured at Fair Value

Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis
				Fair Value Measurements Using
	March 31, 2012			Level 1		Level 2		Level 3
		($ in Thousands)
Assets:
Loans held for sale	$	196,570	$	―	$	196,570	$	―
Impaired loans ⁽¹⁾		157,270		―		―		157,270
Mortgage servicing rights		50,001		―		―		50,001

				Fair Value Measurements Using
	December 31, 2011			Level 1		Level 2		Level 3
		($ in Thousands)
Assets:
Loans held for sale	$	249,195	$	―	$	249,195	$	―
Impaired loans ⁽¹⁾		178,669		―		―		178,669
Mortgage servicing rights		48,152		―		―		48,152

- Definition

Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income, and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issuances, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset.

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- Definition

Tabular disclosure of the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments, assets, and liabilities. Such certain disclosures about the financial instruments, assets, and liabilities include: (1) the fair value of the required items together with their carrying amounts (as appropriate) and (2) the methodology and assumptions used in developing such estimates of fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 107

-Paragraph 14

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 107

-Paragraph 15

-Subparagraph b-d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

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-URI http://asc.fasb.org/extlink&oid=6947722&loc=d3e13476-108611

Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 107

-Paragraph 10

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

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-Publisher FASB

-Name Accounting Standards Codification

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 11: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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Reference 12: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 159

-Paragraph 19

-Subparagraph a, b, c(1), d(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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