Loans and Allowance (Troubled Debts Restructured Defaulted) (Details) - Consumer [Member] $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2018 USD ($) loan	Sep. 30, 2017 USD ($) loan	Sep. 30, 2018 USD ($) loan	Sep. 30, 2017 USD ($) loan
First Mortgage [Member]
Financing Receivable, Modifications [Line Items]
No. of Loans \| loan	1	1	1	1
Post-Modification Outstanding Recorded Balance \| $	$ 48	$ 79	$ 48	$ 79
Second Mortgage [Member]
Financing Receivable, Modifications [Line Items]
No. of Loans \| loan	1	0	1
Post-Modification Outstanding Recorded Balance \| $	$ 5		$ 5

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.

No definition available.

+ Details

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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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