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Derivatives and Hedging Activities (FV of Derivative Financial Instruments and Classification on Balance Sheet) (Details) - USD ($) $ in Thousands | Sep. 30, 2016 | Dec. 31, 2015
--- | --- | ---
Derivatives, Fair Value [Line Items] |  |
Derivative Asset, Fair Value, Gross Asset | $ 41,905 | $ 23,072
Liability Derivatives | 184,754 | 160,270
Other Assets [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value | 42,556 | 23,305
Derivative Asset, Fair Value, Gross Asset | 42,556 | 23,305
Other Liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value | 41,847 | 23,040
Liability Derivatives | 43,840 | 26,313
Interest rate swaps [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Liability Derivatives | 1,993 | 3,273
Interest rate swaps [Member] | Derivatives designated as hedges [Member] | Other Liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Interest Rate Derivative Liabilities, at Fair Value |  | 3,273
Loan level swaps [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Asset, Fair Value, Gross Asset | 41,411 | 22,470
Liability Derivatives | 41,378 | 22,465
Loan level swaps [Member] | Not Designated as Hedging Instrument | Other Assets [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value |  | 22,470
Loan level swaps [Member] | Not Designated as Hedging Instrument | Other Liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value |  | 22,465
Foreign exchange contracts |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Asset, Fair Value, Gross Asset | 494 | 602
Liability Derivatives | 469 | 574
Foreign exchange contracts | Not Designated as Hedging Instrument | Other Assets [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value |  | 602
Foreign exchange contracts | Not Designated as Hedging Instrument | Other Liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value |  | 574
Interest Rate Lock Commitments [Member] | Not Designated as Hedging Instrument | Other Assets [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Instrument Not Designated as a Hedge, Interest Rate Lock Commitments, Asset at Fair Value | 488 | 233
Derivative Instrument Not Designated as a Hedge, Forward Sales Agreements, Asset at Fair Value | 163 | 0
Interest Rate Lock Commitments [Member] | Not Designated as Hedging Instrument | Other Liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative Instrument Not Designated as a Hedge, Interest Rate Lock Commitments, Liabilities at Fair Value | 0 | 0
Derivative Instrument Not Designated as a Hedge, Forward Sales Agreements, Liabilities at Fair Value | $ 0 | $ 1

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- Definition Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624163-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226000-175313 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4D -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=64830801&loc=SL51823488-111719 + Details
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