Loans and Allowance for Credit Losses Troubled Debt Restructuring Modification (Details) $ in Thousands	3 Months Ended
Mar. 31, 2019 USD ($) loans	Mar. 31, 2018 USD ($) loans
Financing Receivable, Modifications [Line Items]
Number of Loans \| loans	20	29
Post-Modification Recorded Investment \| $	$ 4,206	$ 10,748
Commercial
Financing Receivable, Modifications [Line Items]
Number of Loans \| loans	4	9
Post-Modification Recorded Investment \| $	$ 2,460	$ 9,359
Real-estate - home equity
Financing Receivable, Modifications [Line Items]
Number of Loans \| loans	12	19
Post-Modification Recorded Investment \| $	$ 829	$ 1,384
Residential Mortgage [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans \| loans	4	1
Post-Modification Recorded Investment \| $	$ 917	$ 5

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524

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Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ References

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