Derivatives (Tables)

12 Months Ended

Dec. 31, 2017

Derivatives [Abstract]

Fair Values of Derivative Financial Instruments

						Fair Values (1)
		Notional Amounts				Assets				Liabilities
	Type of	December 31,				December 31,				December 31,
(in thousands)	Hedge	2017		2016		2017		2016		2017		2016
Derivatives designated
as hedging instruments:
Interest rate swaps	Cash Flow	$	875,000	$	1,100,000	$	—	$	—	$	14,020	$	7,787
Interest rate swaps	Fair Value		483,110		—		—		—		2,475		—
		$	1,358,110	$	1,100,000	$	—	$	—	$	16,495	$	7,787
Derivatives not designated
as hedging instruments:
Interest rate swaps (2)	N/A	$	1,144,789	$	979,391	$	15,408	$	18,405	$	15,857	$	18,362
Risk participation agreements	N/A		119,951		84,732		23		50		109		105
Forward commitments to sell
residential mortgage loans	N/A		80,462		75,676		1,000		900		290		221
Interest rate-lock commitments
on residential mortgage loans	N/A		53,724		46,840		186		189		782		228
Foreign exchange forward
contracts	N/A		42,260		56,152		2,453		771		2,419		729
		$	1,441,186	$	1,242,791	$	19,070	$	20,315	$	19,457	$	19,645
Total derivatives		$	2,799,296	$	2,342,791	$	19,070	$	20,315	$	35,952	$	27,432
Less: netting adjustments (3)							(4,913)		—		(21,563)		—
Total derivate assets/liabilities							14,157		20,315		14,389		27,432

(1) Derivative assets and liabilities are reported with other assets or other liabilities, respectively, in the consolidated balance sheets.

(2) The notional amount represents both the customer accommodation agreements and offsetting agreements with unrelated financial institutions.

(3) Represents balance sheet netting of derivative assets and liabilities for variation margin collateral held or placed with the same central clearing counterparty. See offsetting assets and liabilities for further information.

Offsetting Derivative Assets and Liabilities Subject to Master Netting Arrangements

As of December 31, 2017
			Gross Amounts Offset in the		Net Amounts  Presented in the		Gross Amounts Not Offset in the Statement of Financial Position
(in thousands)	Gross Amounts Recognized		Statement of Financial Position		Statement of Financial Position		Financial Instruments		Cash Collateral		Net Amount
Derivative Assets	$	7,155	$	(5,007)	$	2,148	$	2,148	$	—	$	—
Derivative Liabilities	$	24,015	$	(20,077)	$	3,938	$	2,148	$	4,099	$	(2,309)

As of December 31, 2016
			Gross Amounts Offset in the		Net Amounts  Presented in the		Gross Amounts Not Offset in the Statement of Financial Position
(in thousands)	Gross Amounts Recognized		Statement of Financial Position		Statement of Financial Position		Financial Instruments		Cash Collateral		Net Amount
Derivative Assets	$	4,788	$	—	$	4,788	$	4,788	$	—	$	—
Derivative Liabilities	$	26,846	$	—	$	26,846	$	4,788	$	19,095	$	2,963