Fair Value of Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2018

Estimated Fair Values and Carrying Amounts of Financial Instruments

The carrying amount and estimated fair values, as well as the level within the fair value hierarchy, of the Company’s financial instruments are included in the tables below. See Note 1, Summary of Significant Accounting Policies, in the 2017 Annual Report on Form 10-K for the year ended December 31, 2017 for a description of how fair value measurements are determined, except for loans, amended upon implementation of ASU 2016-01, Financial Statements - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. See Note 2, Recent Accounting Pronouncements, in this Report for a description of how the fair value measurement is determined for loans beginning January 1, 2018.



		June 30, 2018
(Dollars in thousands)		Carrying Amount		Fair Value		Level 1		Level 2		Level 3
Measurement Category
Fair Value
	Financial Assets
	Securities available for sale	$	4,650,915	$	4,650,915	$	—	$	4,650,915	$	—
	CRA and Community Development Investment Funds	1,878		1,878		—		1,878		—
	Mortgage loans held for sale	78,843		78,843		—		78,843		—
	Derivative instruments	12,913		12,913		—		12,913		—

	Financial Liabilities
	Derivative instruments	38,607		38,607		—		38,607		—

Amortized Cost
	Financial Assets
	Cash and cash equivalents	$	727,388	$	727,388	$	727,388	$	—	$	—
	Securities held to maturity	221,030		216,309		—		216,309		—
	Loans and leases, net of unearned income and allowance for loan and lease losses	21,939,207		21,825,925		—		—		21,825,925

	Financial Liabilities
	Deposits	23,430,458		23,425,170		—		23,425,170		—
	Short-term borrowings	1,054,213		1,054,213		459,213		595,000		—
	Long-term debt	1,438,614		1,423,382		—		—		1,423,382



		December 31, 2017
(Dollars in thousands)		Carrying Amount		Fair Value		Level 1		Level 2		Level 3
Measurement Category
Fair Value
	Financial Assets
	Securities available for sale	$	4,590,062	$	4,590,062	$	—	$	4,590,062	$	—
	Mortgage loans held for sale	134,916		134,916		—		134,916		—
	Derivative instruments	31,265		31,265		—		31,265		—

	Financial Liabilities
	Derivative instruments	25,154		25,154		—		25,154		—

Amortized Cost
	Financial Assets
	Cash and cash equivalents	$	625,724	$	625,724	$	625,724	$	—	$	—
	Securities held to maturity	227,318		227,964		—		227,964		—
	Loans and leases, net of unearned income and allowance for loan and lease losses	19,937,290		19,826,857		—		—		19,826,857

	Financial Liabilities
	Deposits	21,466,717		21,460,782		—		21,460,782		—
	Short-term borrowings	991,297		991,297		516,297		475,000		—
	Long-term debt	1,495,835		1,476,899		—		—		1,476,899