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Derivatives and Hedging Activities (Gains and Losses on Derivatives) (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2017 | Mar. 31, 2016
Derivatives Not Designated as a Hedging Instruments [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gain (loss) recognized in Income on derivatives for the three months ended | $ (225) | $ (436)
Derivatives Not Designated as a Hedging Instruments [Member] | Other income [Member] | Interest rate products [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gain (loss) recognized in Income on derivatives for the three months ended | (226) | (540)
Derivatives Not Designated as a Hedging Instruments [Member] | Other income [Member] | Credit contracts [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gain (loss) recognized in Income on derivatives for the three months ended | 1 | 104
Designated as Hedging Instrument [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gain (loss) recognized in Income on derivatives for the three months ended | (57) | (145)
Designated as Hedging Instrument [Member] | Interest expense [Member] | Interest rate products [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gain (loss) recognized in Income on derivatives for the three months ended | $ (57) | $ (145)

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5618551-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (a),(c),(d),(e) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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