Derivative Financial Instruments Notional Amounts and Fair Values of Derivative Financial Instruments (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Foreign Currency Open Position	$ 500,000
Derivative, Fair Value, Net	1,340	6,281
Negative Fair Values [Member]
Asset (Liability) Fair Value	(1,820)	(7,090)
Interest Rate Lock Commitments [Member]
Asset (Liability) Fair Value	3,050	6,757
Interest Rate Lock Commitments [Member] \| Positive Fair Values [Member]
Notional Amount	120,547	314,416
Asset, Fair Value	3,100	6,912
Interest Rate Lock Commitments [Member] \| Negative Fair Values [Member]
Notional Amount	5,790	9,714
Liability, Fair Value	(50)	(155)
Forward Commitments [Member]
Asset (Liability) Fair Value	(2,177)	(208)
Forward Commitments [Member] \| Positive Fair Values [Member]
Notional Amount	6,002	79,152
Asset, Fair Value	16	707
Forward Commitments [Member] \| Negative Fair Values [Member]
Notional Amount	130,498	236,500
Liability, Fair Value	(2,193)	(915)
InterestRateSwapWithCustomer [Domain]
Asset (Liability) Fair Value	1,820	7,090
InterestRateSwapWithCustomer [Domain] \| Positive Fair Values [Member]
Notional Amount	115,409	130,841
Asset, Fair Value	3,460	7,090
InterestRateSwapWithCustomer [Domain] \| Negative Fair Values [Member]
Notional Amount	84,625	0
Liability, Fair Value	(1,640)	0
InterestRateSwapWithCounterparty [Domain] \| Positive Fair Values [Member]
Notional Amount	84,625	0
Asset, Fair Value	1,640	0
InterestRateSwapWithCounterparty [Domain] \| Negative Fair Values [Member]
Notional Amount	115,409	130,841
Liability, Fair Value	(3,460)	(7,090)
ForeignCurrencyForwardWithCustomer [Domain]
Foreign Currency Derivatives at Fair Value, Net	(386)	(211)
ForeignCurrencyForwardWithCustomer [Domain] \| Positive Fair Values [Member]
Notional Amount of Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	4,362	1,810
Foreign Currency Contract, Asset, Fair Value Disclosure	64	137
ForeignCurrencyForwardWithCustomer [Domain] \| Negative Fair Values [Member]
Notional Amount of Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	16,770	9,851
Foreign Currency Contracts, Liability, Fair Value Disclosure	(450)	(348)
ForeignCurrencyForwardWithCorrespondentBanks [Domain]
Foreign Currency Derivatives at Fair Value, Net	853	(57)
ForeignCurrencyForwardWithCorrespondentBanks [Domain] \| Positive Fair Values [Member]
Notional Amount of Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	25,418	59,368
Foreign Currency Contract, Asset, Fair Value Disclosure	1,013	1,064
ForeignCurrencyForwardWithCorrespondentBanks [Domain] \| Negative Fair Values [Member]
Notional Amount of Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	10,805	37,865
Foreign Currency Contracts, Liability, Fair Value Disclosure	$ (160)	$ (1,121)

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- Definition

Fair value of the assets less the liabilities of a derivative or group of derivatives.

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This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents contracts related to the exchange of different currencies, including foreign currency options, forward (delivery or nondelivery) contracts, and swaps entered into and existing as of the balance sheet date.

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Fair value as of the balance sheet date of foreign currency derivative assets, net of foreign currency derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized on the balance sheet.

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Fair value as of the balance sheet date of interest rate derivative assets, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as assets.

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Fair value as of the balance sheet date of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as liabilities.

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Fair value as of the balance sheet date of interest rate derivative assets, net of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized on the balance sheet.

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Aggregate notional amount of all foreign currency derivatives not designated as hedging instruments. Notional amount refers to the number of currency units specified in the foreign currency derivative contract.

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Aggregate notional amount of all interest rate derivatives not designated as hedging instruments. Notional amount refers to the monetary amount specified in the interest rate derivative contract.

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