Derivative Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2014

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Notional Amounts and Estimated Fair Values of Interest Rate Derivative Contracts Outstanding

The notional amounts and estimated fair values of interest rate derivative contracts outstanding at December 31, 2014 and 2013 are presented in the following table. The Corporation obtains dealer quotations to value its interest rate derivative contracts designated as hedges of cash flows, while the fair values of other interest rate derivative contracts are estimated utilizing internal valuation models with observable market data inputs.

	December 31, 2014					December 31, 2013
	Notional Amount		Estimated Fair Value			Notional Amount		Estimated Fair Value
Derivatives designated as hedges of fair value:
Financial institution counterparties:
Loan/lease interest rate swaps - assets	$	31,614	$	469		$	50,965	$	1,386
Loan/lease interest rate swaps - liabilities	37,672		(3,179		)	43,631		(4,191		)
Non-hedging interest rate derivatives:
Financial institution counterparties:
Loan/lease interest rate swaps - assets	69,842		719			195,234		9,573
Loan/lease interest rate swaps - liabilities	765,979		(38,952		)	626,980		(32,469		)
Loan/lease interest rate caps - assets	73,058		1,003			53,058		1,309
Customer counterparties:
Loan/lease interest rate swaps - assets	765,979		38,910			626,980		32,426
Loan/lease interest rate swaps - liabilities	69,842		(719		)	195,234		(9,573		)
Loan/lease interest rate caps - liabilities	73,058		(1,003		)	53,058		(1,309		)

Schedule of Weighted-Average Rates Paid and Received for Interest Rate Swaps Outstanding

The weighted-average rates paid and received for interest rate swaps outstanding at December 31, 2014 were as follows:

	Weighted-Average
	Interest Rate Paid		Interest Rate Received
Interest rate swaps:
Fair value hedge loan/lease interest rate swaps	2.80	%	0.16	%
Non-hedging interest rate swaps - financial institution counterparties	4.05		1.67
Non-hedging interest rate swap - customer counterparties	1.67		4.05

Schedule of Notional Amounts and Estimated Fair Values of Commodity Derivative Positions

The notional amounts and estimated fair values of non-hedging commodity swap and option derivative positions outstanding are presented in the following table. The Corporation obtains dealer quotations and uses internal valuation models with observable market data inputs to value its commodity derivative positions.

		December 31, 2014				December 31, 2013
	Notional Units	Notional Amount	Estimated Fair Value			Notional Amount	Estimated Fair Value
Financial institution counterparties:
Oil - assets	Barrels	470	$	14,357		356	$	1,004
Oil - liabilities	Barrels	197	(1,670		)	1,574	(2,704		)
Natural gas - assets	MMBTUs	12,235	12,707			14,240	2,903
Natural gas - liabilities	MMBTUs	16,755	(4,095		)	22,510	(3,212		)
Customer counterparties:
Oil - assets	Barrels	197	1,670			1,574	2,818
Oil - liabilities	Barrels	470	(14,318		)	356	(991		)
Natural gas - assets	MMBTUs	16,755	4,095			22,850	3,301
Natural gas - liabilities	MMBTUs	12,235	(12,646		)	13,900	(2,805		)

Schedule of Foreign Exchange Contracts, Statement of Financial Position

The notional amounts and fair values of open foreign currency forward contracts were as follows:

		December 31, 2014				December 31, 2013
	Notional Currency	Notional Amount	Estimated Fair Value			Notional Amount	Estimated Fair Value
Financial institution counterparties:
Forward contracts – assets	EUR	936	$	7		1,175	$	5
Forward contracts - assets	CAD	24,724	659			18,886	85
Forward contracts – liabilities	GBP	544	(2		)	—	—
Forward contracts - liabilities	EUR	—	—			494	(4		)
Forward contracts - liabilities	CAD	—	—			14,078	(23		)
Customer counterparties:
Forward contracts – assets	CAD	—	—			14,055	45
Forward contracts – liabilities	CAD	24,680	(615		)	18,859	(58		)

Schedule of Amounts Related to Interest Rate Derivatives Designated as Hedges of Fair Value

Amounts included in the consolidated statements of income related to interest rate derivatives designated as hedges of fair value were as follows:

	2014			2013			2012
Commercial loan/lease interest rate swaps:
Amount of gain (loss) included in interest income on loans	$	(2,014	)	$	(2,437	)	$	(2,587	)
Amount of (gain) loss included in other non-interest expense	3			4			46

Schedule of Amounts Related to Interest Rate Derivatives Included in Income Designated as Hedges of Cash Flows

Amounts included in the consolidated statements of income and in other comprehensive income for the period related to interest rate derivatives designated as hedges of cash flows were as follows:

	2014		2013			2012
Interest rate swaps/caps/floors on variable-rate loans:
Amount reclassified from accumulated other comprehensive income to interest income on loans	$	30,604	$	37,380		$	37,380
Interest rate swaps on junior subordinated deferrable interest debentures:
Amount reclassified from accumulated other comprehensive income to interest expense on junior subordinated deferrable interest debentures	—		4,064			4,224
Amount of gain (loss) recognized in other comprehensive income	—		(49		)	(783		)

Schedule of Amounts Related to Non-Hedging Interest Rate and Commodity Derivatives

Amounts included in the consolidated statements of income related to non-hedging interest rate, commodity and foreign currency derivative instruments are presented in the table below.

	2014			2013			2012
Non-hedging interest rate derivatives:
Other non-interest income	$	1,786		$	1,441		$	4,722
Other non-interest expense	(2		)	(96		)	(116		)
Non-hedging commodity derivatives:
Other non-interest income	118			496			124
Non-hedging foreign currency derivatives:
Other non-interest income	162			175			—