Estimated Fair Values (Tables)

3 Months Ended

Mar. 31, 2014

Fair Value Disclosures [Abstract]

Estimated Fair Values For Certain Financial Assets And Financial Liabilities

For all other financial assets and financial liabilities, the carrying value is a reasonable estimate of the fair value as of March 31, 2014 and December 31, 2013. The carrying value and fair value for these assets and liabilities are equivalent because they are relatively short term in nature and there is no interest rate or credit risk that would cause the fair value to differ from the carrying value.

(Dollars in thousands)	March 31, 2014				December 31, 2013
	Carrying value		Fair value		Carrying value		Fair value
Cash and due from banks	$	543,471	$	543,471	$	533,599	$	533,599
Overnight investments	1,161,469		1,161,469		859,324		859,324
Investment securities available for sale	5,676,237		5,676,237		5,387,703		5,387,703
Investment securities held to maturity	782		835		907		974
Loans held for sale	53,361		54,057		47,271		47,956
Acquired loans, net of allowance for loan and lease losses	1,225,825		1,201,309		975,906		956,388
Originated loans, net of allowance for loan and lease losses	12,022,277		11,659,364		11,924,424		11,589,149
Receivable from the FDIC for loss share agreements (1)	74,784		37,303		93,397		38,438
Income earned not collected	49,668		49,668		48,390		48,390
Federal Home Loan Bank stock	34,417		34,417		40,819		40,819
Preferred stock and other acquired financial assets	17,783		18,521		33,564		34,786
Deposits	18,763,545		18,785,474		17,874,066		17,898,570
Short-term borrowings	617,794		617,794		511,418		511,418
Long-term obligations	440,300		453,313		510,769		526,037
Payable to the FDIC for loss share agreements	111,339		115,129		109,378		111,941
Accrued interest payable	5,675		5,675		6,737		6,737
Interest rate swap	6,501		6,501		7,220		7,220

⁽¹⁾ The fair value of the FDIC receivable excludes amortization expected to be recognized in prospective periods.

Assets And Liabilities Carried At Fair Value On A Recurring Basis

For assets and liabilities carried at fair value on a recurring basis, the following table provides fair value information as of March 31, 2014 and December 31, 2013.

	March 31, 2014
			Fair value measurements using:
(Dollars in thousands)	Fair value		Level 1 inputs		Level 2 inputs		Level 3 inputs
Assets measured at fair value
Investment securities available for sale
U.S. Treasury	$	1,273,221	$	—	$	1,273,221	$	—
Government agency	1,812,774		—		1,812,774		—
Mortgage-backed securities	2,566,666		—		2,566,666		—
Equity securities	22,560		—		22,560		—
Municipal securities	186		—		186		—
Other	830		—		830		—
Total	$	5,676,237	$	—	$	5,676,237	$	—
Liabilities measured at fair value
Interest rate swaps accounted for as cash flow hedges	$	6,501	$	—	$	6,501	$	—
	December 31, 2013
			Fair value measurements using:
	Fair value		Level 1 inputs		Level 2 inputs		Level 3 inputs
Assets measured at fair value
Investment securities available for sale
U.S. Treasury	$	373,437	$	—	$	373,437	$	—
Government agency	2,544,229		—		2,544,229		—
Mortgage-backed securities	2,446,873		—		2,446,873		—
Equity securities	22,147		—		22,147		—
Municipal securities	187		—		187		—
Other	830		—		830		—
Total	$	5,387,703	$	—	$	5,387,703	$	—
Liabilities measured at fair value
Interest rate swaps accounted for as cash flow hedges	$	7,220	$	—	$	7,220	$	—

Assets And Liabilities Carried At Fair Value On A Nonrecurring Basis

For financial assets and liabilities carried at fair value on a nonrecurring basis, the following table provides fair value information as of March 31, 2014 and December 31, 2013.

	March 31, 2014
			Fair value measurements using:
(Dollars in thousands)	Fair value		Level 1 inputs		Level 2 inputs		Level 3 inputs
Loans held for sale	$	14,911	$	—	$	14,911	$	—
Originated impaired loans	73,301		—		—		73,301
Other real estate not covered under loss share agreements remeasured during current year	17,678		—		—		17,678
Other real estate covered under loss share agreements remeasured during current year	32,402		—		—		32,402
	December 31, 2013
			Fair value measurements using:
	Fair value		Level 1 inputs		Level 2 inputs		Level 3 inputs
Loans held for sale	29,389		—		29,389		—
Originated impaired loans	77,817		—		—		77,817
Other real estate not covered under loss share agreements remeasured during current year	20,526		—		—		20,526
Other real estate covered under loss share agreements remeasured during current year	37,587		—		—		37,587

Schedule of Fair Value Measurements Of Other Real Estate Opportunities

No financial liabilities were carried at fair value on a nonrecurring basis as of March 31, 2014 and December 31, 2013.