Loans - Troubled Debt Restructurings Subsequently Defaulted (Details) $ in Thousands	12 Months Ended
Dec. 31, 2017 USD ($) contract	Dec. 31, 2016 USD ($) contract
Financing Receivable, Modifications [Line Items]
Number of Contracts \| contract	13	6
Recorded Investment \| $	$ 7,131	$ 1,210
Commercial and industrial
Financing Receivable, Modifications [Line Items]
Number of Contracts \| contract	7	0
Recorded Investment \| $	$ 5,841	$ 0
Commercial real estate
Financing Receivable, Modifications [Line Items]
Number of Contracts \| contract	1	2
Recorded Investment \| $	$ 165	$ 357
Residential mortgage
Financing Receivable, Modifications [Line Items]
Number of Contracts \| contract	5	0
Recorded Investment \| $	$ 1,125	$ 0
Consumer
Financing Receivable, Modifications [Line Items]
Number of Contracts \| contract	0	4
Recorded Investment \| $	$ 0	$ 853

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953682-111524

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- Definition

Amount of investment related to financing receivables modified by troubled debt restructurings within the previous 12 months, for which there was a payment default.

+ References

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