Derivatives and Hedging Activities (FV of Derivative Financial Instruments and Classification on Balance Sheet) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Fair value of derivative financial instruments as well as their classification on the balance sheet
Total	$ 22,390	$ 16,697
Total	225,824	225,648
Other Assets [Member]
Fair value of derivative financial instruments as well as their classification on the balance sheet
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	22,688	16,965
Total	22,688	16,965
Other Liabilities [Member]
Fair value of derivative financial instruments as well as their classification on the balance sheet
Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value	22,380	16,765
Total	27,950	26,395
Interest rate derivatives
Fair value of derivative financial instruments as well as their classification on the balance sheet
Total	0	0
Total	5,571	9,630
Interest rate derivatives \| Derivatives designated as hedges: [Member] \| Other Assets [Member]
Fair value of derivative financial instruments as well as their classification on the balance sheet
Interest rate derivatives	0
Interest rate derivatives \| Derivatives designated as hedges: [Member] \| Other Liabilities [Member]
Fair value of derivative financial instruments as well as their classification on the balance sheet
Interest rate derivatives	5,570	9,630
Loan level derivatives
Fair value of derivative financial instruments as well as their classification on the balance sheet
Total	18,383	16,301
Total	18,380	16,340
Loan level derivatives \| Derivatives not designated as hedges: [Member] \| Other Assets [Member]
Fair value of derivative financial instruments as well as their classification on the balance sheet
Loan level derivatives	18,383	16,301
Loan level derivatives \| Derivatives not designated as hedges: [Member] \| Other Liabilities [Member]
Fair value of derivative financial instruments as well as their classification on the balance sheet
Loan level derivatives	18,380	16,340
Foreign exchange contracts
Fair value of derivative financial instruments as well as their classification on the balance sheet
Total	4,007	396
Total	3,984	390
Foreign exchange contracts \| Derivatives not designated as hedges: [Member] \| Other Assets [Member]
Fair value of derivative financial instruments as well as their classification on the balance sheet
Foreign exchange contracts	4,007	396
Foreign exchange contracts \| Derivatives not designated as hedges: [Member] \| Other Liabilities [Member]
Fair value of derivative financial instruments as well as their classification on the balance sheet
Foreign exchange contracts	3,984	390
Mortgage Derivatives \| Derivatives not designated as hedges: [Member] \| Other Assets [Member]
Fair value of derivative financial instruments as well as their classification on the balance sheet
Interest rate lock commitments	295	204
Forward TBA mortgage contracts	0	64
Forward sales agreements	3	0
Mortgage Derivatives \| Derivatives not designated as hedges: [Member] \| Other Liabilities [Member]
Fair value of derivative financial instruments as well as their classification on the balance sheet
Interest rate lock commitments	0	0
Forward TBA mortgage contracts	16	0
Forward sales agreements	$ 0	$ 35

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Derivative Instrument Not Designated as a Hedge, Forward Sales Agreements, Liabilities at Fair Value

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Derivative Instrument Not Designated as a Hedge, Forward TBA Mortgage Contracts, Asset at Fair Value

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Derivative Instrument Not Designated as a Hedge, Interest Rate Lock Commitments, Asset at Fair Value

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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-Topic 210

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Fair value as of the balance sheet date of derivative instrument not designated as hedging instrument and classified as an asset.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4B

-Subparagraph (c)(2)

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Fair value as of the balance sheet date of all foreign currency derivative assets not designated as hedging instruments.

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 10

-Subparagraph (a)

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Fair value as of the balance sheet date of all derivative assets not designated as hedging instruments.

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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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