Derivative Financial Instruments Part 2 (Details) (USD $) In Thousands, unless otherwise specified			3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended						3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013 Derivatives in Hedging Relationships [Member]	Sep. 30, 2012 Derivatives in Hedging Relationships [Member]	Sep. 30, 2013 Derivatives in Hedging Relationships [Member]	Sep. 30, 2012 Derivatives in Hedging Relationships [Member]	Sep. 30, 2013 Derivatives in Hedging Relationships [Member] Mortgage Banking, Net [Member]	Sep. 30, 2012 Derivatives in Hedging Relationships [Member] Mortgage Banking, Net [Member]	Sep. 30, 2013 Derivatives in Hedging Relationships [Member] Mortgage Banking, Net [Member]	Sep. 30, 2012 Derivatives in Hedging Relationships [Member] Mortgage Banking, Net [Member]	Sep. 30, 2013 Derivatives in Hedging Relationships [Member] Forward Contracts [Member] Other Liabilities [Member]	Dec. 31, 2012 Derivatives in Hedging Relationships [Member] Forward Contracts [Member] Other Liabilities [Member]	Sep. 30, 2013 Derivatives in Hedging Relationships [Member] Interest Rate Swap [Member] Other Assets [Member]	Dec. 31, 2012 Derivatives in Hedging Relationships [Member] Interest Rate Swap [Member] Other Assets [Member]	Sep. 30, 2013 Derivatives not Designated as Hedging Instruments [Member] Mortgage Banking, Net [Member]	Sep. 30, 2012 Derivatives not Designated as Hedging Instruments [Member] Mortgage Banking, Net [Member]	Sep. 30, 2013 Derivatives not Designated as Hedging Instruments [Member] Mortgage Banking, Net [Member]	Sep. 30, 2012 Derivatives not Designated as Hedging Instruments [Member] Mortgage Banking, Net [Member]	Sep. 30, 2013 Derivatives not Designated as Hedging Instruments [Member] Bankcard and Other Fees [Member]	Sep. 30, 2012 Derivatives not Designated as Hedging Instruments [Member] Bankcard and Other Fees [Member]	Sep. 30, 2013 Derivatives not Designated as Hedging Instruments [Member] Bankcard and Other Fees [Member]	Sep. 30, 2012 Derivatives not Designated as Hedging Instruments [Member] Bankcard and Other Fees [Member]	Sep. 30, 2013 Derivatives not Designated as Hedging Instruments [Member] Future Contracts [Member] Other Assets [Member]	Dec. 31, 2012 Derivatives not Designated as Hedging Instruments [Member] Future Contracts [Member] Other Assets [Member]	Sep. 30, 2013 Derivatives not Designated as Hedging Instruments [Member] Exchange Traded Purchased Options [Member] Other Assets [Member]	Dec. 31, 2012 Derivatives not Designated as Hedging Instruments [Member] Exchange Traded Purchased Options [Member] Other Assets [Member]	Sep. 30, 2013 Derivatives not Designated as Hedging Instruments [Member] OTC Written Options (Rate Locks) [Member] Other Assets [Member]	Dec. 31, 2012 Derivatives not Designated as Hedging Instruments [Member] OTC Written Options (Rate Locks) [Member] Other Assets [Member]	Sep. 30, 2013 Derivatives not Designated as Hedging Instruments [Member] Interest Rate Swap [Member] Other Assets [Member]	Dec. 31, 2012 Derivatives not Designated as Hedging Instruments [Member] Interest Rate Swap [Member] Other Assets [Member]	Sep. 30, 2013 Derivatives not Designated as Hedging Instruments [Member] Interest Rate Swap [Member] Other Liabilities [Member]	Dec. 31, 2012 Derivatives not Designated as Hedging Instruments [Member] Interest Rate Swap [Member] Other Liabilities [Member]	Sep. 30, 2013 Derivatives not Designated as Hedging Instruments [Member] Credit Risk Participation Agreement [Member] Other Assets [Member]	Dec. 31, 2012 Derivatives not Designated as Hedging Instruments [Member] Credit Risk Participation Agreement [Member] Other Assets [Member]	Sep. 30, 2013 Derivatives not Designated as Hedging Instruments [Member] Exchange Traded Written Options [Member] Other Liabilities [Member]	Dec. 31, 2012 Derivatives not Designated as Hedging Instruments [Member] Exchange Traded Written Options [Member] Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Fair value of derivative asset	$ 6,137	$ 5,241											$ 1,963	$ 0									$ 2,228	$ (482)	$ 405	$ 42	$ 2,047	$ 2,284	$ 4,174	$ 5,241			$ 24	$ 22
Fair value of derivative liability	3,947	5,329									2,878	738																			3,947	5,329			480	545
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized							(13,008)	(4,212)	(2,141)	(5,279)					2,728	2,883	(5,421)	9,913	(203)	(85)	192	(246)
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net [Abstract]
Amount of (loss) gain recognized in other comprehensive (loss) income			(242)	0	1,212	0
Offsetting of Derivative Assets [Abstract]
Gross Amounts of Recognized Assets, Offsetting of Derivative Assets	6,137	5,241											1,963	0									2,228	(482)	405	42	2,047	2,284	4,174	5,241			24	22
Gross Amounts Offset in the Statement of Financial Position, Offsetting of Derivative Assets	0	0
Net Amounts of Assets presented in the Statement of Financial Position, Offsetting of Derivative Assets	6,137	5,241
Financial Instruments, Offsetting of Derivative Assets	(1,253)	0
Cash Collateral Received, Offsetting of Derivative Assets	(1,500)	0
Net Amount, Offsetting of Derivative Assets	3,384	5,241
Offsetting of Derivative Liabilities [Abstract]
Gross Amounts of Recognized Liabilities, Offsetting of Derivative Liabilities	3,947	5,329
Gross Amounts Offset in the Statement of Financial Position, Offsetting of Derivative Liabilities	0	0
Net Amounts of Liabilities presented in the Statement of Financial Position, Offsetting of Derivative Liabilities	3,947	5,329									2,878	738																			3,947	5,329			480	545
Financial Instruments, Offsetting of Derivative Liabilities	(1,253)	0
Cash Collateral Posted, Offsetting of Derivative Liabilities	0	(594)
Net Amount, Offsetting of Derivative Liabilities	$ 2,694	$ 4,735