Derivative Instruments and Other Hedging Activities (Tables)

9 Months Ended

Sep. 30, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Outstanding Derivative Instruments

Information pertaining to outstanding derivative instruments is as follows:

	Balance Sheet Location	Derivative Assets - Fair Value				Balance Sheet Location	Derivative Liabilities - Fair Value
(Dollars in thousands)		September 30, 2017		December 31, 2016			September 30, 2017		December 31, 2016
Derivatives designated as hedging instruments under ASC Topic 815:
Interest rate contracts	Other assets	$	—	$	—	Other liabilities	$	1,027	$	525
Total derivatives designated as hedging instruments under ASC Topic 815		$	—	$	—		$	1,027	$	525
Derivatives not designated as hedging instruments under ASC Topic 815:
Interest rate contracts	Other assets	$	19,752	$	20,719	Other liabilities	$	17,885	$	20,719
Foreign exchange contracts	Other assets	17		27		Other liabilities	17		26
Forward sales contracts	Other assets	493		6,014		Other liabilities	597		794
Written and purchased options	Other assets	11,517		12,125		Other liabilities	8,894		8,098
Other contracts	Other assets	—		1		Other liabilities	33		47
Total derivatives not designated as hedging instruments under ASC Topic 815		$	31,779	$	38,886		$	27,426	$	29,684
Total		$	31,779	$	38,886		$	28,453	$	30,209

	Derivative Assets - Notional Amount				Derivative Liabilities - Notional Amount
(Dollars in thousands)	September 30, 2017		December 31, 2016		September 30, 2017		December 31, 2016
Derivatives designated as hedging instruments under ASC Topic 815:
Interest rate contracts	$	—	$	—	$	108,500	$	108,500
Total derivatives designated as hedging instruments under ASC Topic 815	$	—	$	—	$	108,500	$	108,500
Derivatives not designated as hedging instruments under ASC Topic 815:
Interest rate contracts	$	1,129,079	$	1,033,955	$	1,129,079	$	1,033,955
Foreign exchange contracts	831		4,474		831		4,474
Forward sales contracts	174,506		229,181		123,785		120,567
Written and purchased options	323,890		289,115		165,946		154,170
Other contracts	8,551		8,784		88,995		106,518
Total derivatives not designated as hedging instruments under ASC Topic 815	$	1,636,857	$	1,565,509	$	1,508,636	$	1,419,684
Total	$	1,636,857	$	1,565,509	$	1,617,136	$	1,528,184

Offsetting Assets

The following table reconciles the gross amounts presented in the consolidated balance sheets to the net amounts that would result in the event of offset.

	September 30, 2017
	Gross Amounts Presented in the Balance Sheet		Gross Amounts Not Offset in the Balance Sheet						Net
(Dollars in thousands)			Derivatives			Collateral  (1)
Derivatives subject to master netting arrangements
Derivative assets
Interest rate contracts not designated as hedging instruments	$	19,752	$	(8,632	)	$	—		$	11,120
Written and purchased options	8,835		—			—			8,835
Total derivative assets subject to master netting arrangements	$	28,587	$	(8,632	)	$	—		$	19,955
Derivative liabilities
Interest rate contracts designated as hedging instruments	$	1,027	$	—		$	—		$	1,027
Interest rate contracts not designated as hedging instruments	17,885		(8,632		)	(983		)	8,270
Total derivative liabilities subject to master netting arrangements	$	18,912	$	(8,632	)	$	(983	)	$	9,297

^{(1)  Consists of cash collateral recorded at cost, which approximates fair value, and investment securities.} 

	December 31, 2016
	Gross Amounts Presented in the Balance Sheet		Gross Amounts Not Offset in the Balance Sheet						Net
(Dollars in thousands)			Derivatives			Collateral (1)
Derivatives subject to master netting arrangements
Derivative assets
Interest rate contracts not designated as hedging instruments	$	20,719	$	(9,677	)	$	—		$	11,042
Written and purchased options	8,085		—			—			8,085
Total derivative assets subject to master netting arrangements	$	28,804	$	(9,677	)	$	—		$	19,127
Derivative liabilities
Interest rate contracts designated as hedging instruments	$	525	$	—		$	(181	)	$	344
Interest rate contracts not designated as hedging instruments	20,719		(9,677		)	(1,711		)	9,331
Total derivative liabilities subject to master netting arrangements	$	21,244	$	(9,677	)	$	(1,892	)	$	9,675

^{(1)  Consists of cash collateral recorded at cost, which approximates fair value, and investment securities.}

Offsetting Liabilities

The following table reconciles the gross amounts presented in the consolidated balance sheets to the net amounts that would result in the event of offset.

	September 30, 2017
	Gross Amounts Presented in the Balance Sheet		Gross Amounts Not Offset in the Balance Sheet						Net
(Dollars in thousands)			Derivatives			Collateral  (1)
Derivatives subject to master netting arrangements
Derivative assets
Interest rate contracts not designated as hedging instruments	$	19,752	$	(8,632	)	$	—		$	11,120
Written and purchased options	8,835		—			—			8,835
Total derivative assets subject to master netting arrangements	$	28,587	$	(8,632	)	$	—		$	19,955
Derivative liabilities
Interest rate contracts designated as hedging instruments	$	1,027	$	—		$	—		$	1,027
Interest rate contracts not designated as hedging instruments	17,885		(8,632		)	(983		)	8,270
Total derivative liabilities subject to master netting arrangements	$	18,912	$	(8,632	)	$	(983	)	$	9,297

^{(1)  Consists of cash collateral recorded at cost, which approximates fair value, and investment securities.} 

	December 31, 2016
	Gross Amounts Presented in the Balance Sheet		Gross Amounts Not Offset in the Balance Sheet						Net
(Dollars in thousands)			Derivatives			Collateral (1)
Derivatives subject to master netting arrangements
Derivative assets
Interest rate contracts not designated as hedging instruments	$	20,719	$	(9,677	)	$	—		$	11,042
Written and purchased options	8,085		—			—			8,085
Total derivative assets subject to master netting arrangements	$	28,804	$	(9,677	)	$	—		$	19,127
Derivative liabilities
Interest rate contracts designated as hedging instruments	$	525	$	—		$	(181	)	$	344
Interest rate contracts not designated as hedging instruments	20,719		(9,677		)	(1,711		)	9,331
Total derivative liabilities subject to master netting arrangements	$	21,244	$	(9,677	)	$	(1,892	)	$	9,675

^{(1)  Consists of cash collateral recorded at cost, which approximates fair value, and investment securities.}

Effect of Derivatives on the Consolidated Financial Statements

At September 30, 2017 and 2016, and for the three and nine months then ended, information pertaining to the effect of the hedging instruments on the consolidated financial statements is as follows:

													Location of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)
			Amount of Gain (Loss) Recognized in OCI net of taxes (Effective Portion)				Location of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)		Amount of Gain (Loss) Reclassified from Accumulated OCI into Income net of taxes (Effective Portion)
(Dollars in thousands)
			For the Three Months Ended September 30
Derivatives in ASC Topic 815 Cash Flow Hedging Relationships		2017			2016			2017			2016			2017		2016
	Interest rate contracts	$	(158	)	$	146	Other income (expense)	$	(101	)	$	—	Other income (expense)	$	—	$	—
Total		$	(158	)	$	146		$	(101	)	$	—		$	—	$	—

														Location of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)
			Amount of Gain (Loss) Recognized in OCI net of taxes (Effective Portion)					Location of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)		Amount of Gain (Loss) Reclassified from Accumulated OCI into Income net of taxes (Effective Portion)
(Dollars in thousands)
			For the Nine Months Ended September 30
Derivatives in ASC Topic 815 Cash Flow Hedging Relationships		2017			2016				2017			2016			2017		2016
	Interest rate contracts	$	(1,081	)	$	(6,309	)	Other income (expense)	$	(249	)	$	—	Other income (expense)	$	—	$	—
Total		$	(1,081	)	$	(6,309	)		$	(249	)	$	—		$	—	$	—

At September 30, 2017 and 2016, and for the three and nine months then ended, information pertaining to the effect of derivatives not designated as hedging instruments on the consolidated financial statements is as follows:

	Location of Gain (Loss) Recognized in  Income on Derivatives	Amount of Gain (Loss) Recognized in Income on Derivatives
		For the Three Months Ended September 30						For the Nine Months Ended September 30
(Dollars in thousands)		2017			2016			2017			2016
Interest rate contracts (1)	Other income	$	743		$	2,215		$	3,159		$	7,509
Foreign exchange contracts	Other income	24			4			38			7
Forward sales contracts	Mortgage income	(2,007		)	(2,590		)	(3,893		)	(12,720		)
Written and purchased options	Mortgage income	(462		)	(2,624		)	(1,393		)	3,846
Other contracts	Other income	8			—			17			—
Total		$	(1,694	)	$	(2,995	)	$	(2,072	)	$	(1,358	)