Estimated Fair Values (Tables)

9 Months Ended

Sep. 30, 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 September 30, 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)	September 30, 2014				December 31, 2013
	Carrying value		Fair value		Carrying value		Fair value
Cash and due from banks	$	400,993	$	400,993	$	533,599	$	533,599
Overnight investments	707,352		707,352		859,324		859,324
Investment securities available for sale	5,648,094		5,648,094		5,387,703		5,387,703
Investment securities held to maturity	607		638		907		974
Loans held for sale	43,612		44,172		47,271		47,956
Net loans and leases	13,601,886		13,091,758		12,900,330		12,545,537
Receivable from the FDIC for loss share agreements (1)	45,140		22,788		93,397		38,438
Income earned not collected	48,511		48,511		48,390		48,390
Federal Home Loan Bank stock	32,309		32,309		40,819		40,819
Preferred stock and other acquired financial assets	13,390		14,388		33,564		34,786
Deposits	18,406,941		17,943,397		17,874,066		17,898,570
Short-term borrowings	798,169		798,169		511,418		511,418
Long-term obligations	313,768		326,743		510,769		526,037
Payable to the FDIC for loss share agreements	116,924		124,330		109,378		111,941
Accrued interest payable	5,303		5,303		6,737		6,737
Interest rate swap	4,984		4,984		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 September 30, 2014 and December 31, 2013.

	September 30, 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	$	1,887,810	$	—	$	1,887,810	$	—
Government agency	1,129,653		—		1,129,653		—
Mortgage-backed securities	2,577,465		—		2,577,465		—
Equity securities	30,028		—		30,028		—
Municipal securities	126		—		126		—
Other	23,012		—		23,012		—
Total	$	5,648,094	$	—	$	5,648,094	$	—
Liabilities measured at fair value
Interest rate swaps accounted for as cash flow hedges	$	4,984	$	—	$	4,984	$	—
	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 September 30, 2014 and December 31, 2013.

	September 30, 2014
			Fair value measurements using:
(Dollars in thousands)	Fair value		Level 1 inputs		Level 2 inputs		Level 3 inputs
Loans held for sale	$	26,975	$	—	$	26,975	$	—
Originated impaired loans	74,216		—		—		74,216
Other real estate not covered under loss share agreements remeasured during current year	31,332		—		—		31,332
Other real estate covered under loss share agreements remeasured during current year	24,003		—		—		24,003
	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