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Derivative Instruments and Hedging Activities (Effect of Derivative Instruments on the Income Statement) (Details) - Not Designated as Hedging Instrument [Member] $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($)
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income	$ 174
Credit Contract [Member] | Noninterest income - Other [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income	$ 174

X

- 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=84234895&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=84234895&loc=SL5624171-113959

+ Details

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X

- 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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- Details

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