Derivative and Hedging Activities (Tables)

12 Months Ended

Dec. 31, 2012

Derivative and Hedging Activities [Abstract]

Summary of Fair Value of Derivative Instruments Designated as Cash flow hedges

						Weighted Average
	Notional			Fair	Balance Sheet	Receive		Pay
	Amount			Value	Category	Rate		Rate		Maturity
December 31, 2011	($ in Thousands)
Interest rate swap — Federal funds purchased and securities sold under agreements to repurchase	$	100,000	$	(2,011)	Other liabilities	0.07	%	3.04	%	8 months

Gains and losses recognized on the Corporation's derivative instruments designated as cash flow hedges

The table below identifies the gains and losses recognized on the Corporation’s derivative instruments designated as cash flow hedges.
										Gross
		Amount of		Category of		Amount of			Category of	Amount of
		Gain /(Loss)		(Gain) /Loss		(Gain) /Loss			Gain /(Loss)	Gain /(Loss)
		Recognized in		Reclassified		Reclassified			Recognized in	Recognized
		OCI on		from AOCI into		from AOCI into			Income on	in Income on
		Derivatives		Income		Income			Derivatives	Derivatives
		(Effective		(Effective		(Effective			(Ineffective	(Ineffective
	($ in Thousands)	Portion)		Portion)		Portion)			Portion)	Portion)
	Year Ended December 31, 2012				Interest Expense				Interest Expense
	Interest rate swap — Federal funds purchased and securities sold under agreements to repurchase	$	6		Federal funds purchased and securities sold under agreements to repurchase	$	1,954		Federal funds purchased and securities sold under agreements to repurchase	$	33
	Year Ended December 31, 2011				Interest Expense			Interest Expense
	Interest rate swap — Federal funds purchased and securities sold under agreements to repurchase	$	(557)		Federal funds purchased and securities sold under agreements to repurchase	$	4,708		Federal funds purchased and securities sold under agreements to repurchase	$	13

Balance sheet category and fair values of derivative instruments not designated as hedging instruments

							Weighted Average
($ in Thousands)		Notional				Balance Sheet	Receive		Pay
		Amount		Fair Value		Category	Rate (1)		Rate (1)		Maturity
December 31, 2012
Interest rate-related instruments — customer and mirror		$	1,728,545	$	69,370	Other assets	1.30	%	1.30	%	47	months
Interest rate-related instruments — customer and mirror			1,728,545		(75,131)	Other liabilities	1.30	%	1.30	%	47	months
Interest rate lock commitments (mortgage)			351,786		7,794	Other assets	—		—			—
Forward commitments (mortgage)			520,000		(147)	Other liabilities	—		—			—
Foreign currency exchange forwards			39,763		1,341	Other assets	—		—			—
Foreign currency exchange forwards			35,745		(1,212)	Other liabilities	—		—			—
Purchased options (time deposit)			111,262		3,620	Other assets	—		—			—
Written options (time deposit)			111,262		(3,620)	Other liabilities	—		—			—
December 31, 2011
Interest rate-related instruments — customer and mirror		$	1,563,831	$	71,143	Other assets	1.66	%	1.66	%	45	months
Interest rate-related instruments — customer and mirror			1,563,831		(78,064)	Other liabilities	1.66	%	1.66	%	45	months
Interest rate lock commitments (mortgage)			235,375		4,571	Other assets	—		—			—
Forward commitments (mortgage)			437,500		(4,771)	Other liabilities	—		—			—
Foreign currency exchange forwards			52,973		2,079	Other assets	—		—			—
Foreign currency exchange forwards			44,107		(1,891)	Other liabilities	—		—			—
Purchased options (time deposit)			54,780		2,854	Other assets
Written options (time deposit)			54,780		(2,854)	Other liabilities
(1)	Reflects the weighted average receive rate and pay rate for the interest rate swap derivative financial instruments only.

Gain (loss) on derivative instruments not designated as hedging instruments

The table below identifies the income statement category of the gains and losses recognized in income on the Corporation’s
derivative instruments not designated as hedging instruments.
	Income Statement Category of	Gain /(Loss)
	Gain /(Loss) Recognized in Income	Recognized in Income
			($ in Thousands)
Year ended December 31, 2012
Interest rate-related instruments —customer and mirror, net	Capital market fees, net		1,160
Interest rate lock commitments (mortgage)	Mortgage banking, net		3,223
Forward commitments (mortgage)	Mortgage banking, net		4,624
Foreign currency exchange forwards	Capital market fees, net		(59)
Covered call options	Interest on investment securities		469
Year ended December 31, 2011
Interest rate-related instruments —customer and mirror, net	Capital market fees, net		(2,443)
Interest rate lock commitments (mortgage)	Mortgage banking, net		4,649
Forward commitments (mortgage)	Mortgage banking, net		(10,388)
Foreign currency exchange forwards	Capital market fees, net		(53)