Derivative Financial Instruments Notional Amounts and Fair Values of Derivative Financial Instruments (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Foreign Currency Open Position	$ 500,000
Derivative, Fair Value, Net	1,012	2,197
Negative Fair Values [Member]
Asset (Liability) Fair Value	(3,317)	888
Interest Rate Lock Commitments [Member]
Asset (Liability) Fair Value	1,197	808
Interest Rate Lock Commitments [Member] | Positive Fair Values [Member]
Asset, Fair Value	1,202	867
Derivative, Notional Amount	91,145	75,217
Interest Rate Lock Commitments [Member] | Negative Fair Values [Member]
Derivative, Notional Amount	1,258	11,393
Liability, Fair Value	(5)	(59)
Forward Commitments [Member]
Asset (Liability) Fair Value	(240)	1,258
Forward Commitments [Member] | Positive Fair Values [Member]
Asset, Fair Value	2	1,263
Derivative, Notional Amount	4,904	87,904
Forward Commitments [Member] | Negative Fair Values [Member]
Derivative, Notional Amount	95,750	2,373
Liability, Fair Value	(242)	(5)
InterestRateSwapWithCustomer [Domain]
Asset (Liability) Fair Value	3,317	(888)
InterestRateSwapWithCustomer [Domain] | Positive Fair Values [Member]
Asset, Fair Value	4,955	2,105
Derivative, Notional Amount	228,588	111,899
InterestRateSwapWithCustomer [Domain] | Negative Fair Values [Member]
Derivative, Notional Amount	81,163	105,673
Liability, Fair Value	(1,638)	(2,993)
InterestRateSwapWithCounterparty [Domain] | Positive Fair Values [Member]
Asset, Fair Value	1,638	2,993
Derivative, Notional Amount	81,163	105,673
InterestRateSwapWithCounterparty [Domain] | Negative Fair Values [Member]
Derivative, Notional Amount	228,588	111,899
Liability, Fair Value	(4,955)	(2,105)
ForeignCurrencyForwardWithCustomer [Domain]
Foreign Currency Derivatives at Fair Value, Net	(127)	(319)
ForeignCurrencyForwardWithCustomer [Domain] | Positive Fair Values [Member]
Derivative, Notional Amount	9,927	2,150
Foreign Currency Contract, Asset, Fair Value Disclosure	56	24
ForeignCurrencyForwardWithCustomer [Domain] | Negative Fair Values [Member]
Derivative, Notional Amount	9,965	12,775
Foreign Currency Contracts, Liability, Fair Value Disclosure	(183)	(343)
ForeignCurrencyForwardWithCorrespondentBanks [Domain]
Foreign Currency Derivatives at Fair Value, Net	182	450
ForeignCurrencyForwardWithCorrespondentBanks [Domain] | Positive Fair Values [Member]
Derivative, Notional Amount	15,036	17,348
Foreign Currency Contract, Asset, Fair Value Disclosure	198	498
ForeignCurrencyForwardWithCorrespondentBanks [Domain] | Negative Fair Values [Member]
Derivative, Notional Amount	4,466	5,872
Foreign Currency Contracts, Liability, Fair Value Disclosure	$ (16)	$ (48)