Loans and Allowance for Loan Losses - Financial Effect of TDRs (Details) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2017 USD ($) loan	Sep. 30, 2016 USD ($) loan	Sep. 30, 2017 USD ($) loan	Sep. 30, 2016 USD ($) loan
Financing Receivable Modifications [Line Items]
Number of loans \| loan	1	4	5	14
Pre-modification outstanding recorded investment	$ 143	$ 1,220	$ 1,236	$ 3,546
Post-modification outstanding recorded investment	143	$ 1,220	1,236	3,546
Charge offs and specific reserves	$ 8		$ 8	$ 131
Residential Real Estate \| 1-to-4 Family Mortgage
Financing Receivable Modifications [Line Items]
Number of loans \| loan	1	1	1	5
Pre-modification outstanding recorded investment	$ 143	$ 1,098	$ 143	$ 326
Post-modification outstanding recorded investment	143	$ 1,098	143	326
Charge offs and specific reserves	$ 8		$ 8	$ 45
Commercial Real Estate \| Owner Occupied
Financing Receivable Modifications [Line Items]
Number of loans \| loan		1	1	2
Pre-modification outstanding recorded investment		$ 118	$ 377	$ 786
Post-modification outstanding recorded investment		$ 118	$ 377	$ 786
Commercial Real Estate \| Consumer and Other
Financing Receivable Modifications [Line Items]
Number of loans \| loan		2
Pre-modification outstanding recorded investment		$ 4
Post-modification outstanding recorded investment		$ 4
Commercial Real Estate \| Non-Owner Occupied
Financing Receivable Modifications [Line Items]
Number of loans \| loan			2	1
Pre-modification outstanding recorded investment			$ 711	$ 133
Post-modification outstanding recorded investment			$ 711	$ 133
Commercial and Industrial
Financing Receivable Modifications [Line Items]
Number of loans \| loan			1	6
Pre-modification outstanding recorded investment			$ 5	$ 2,301
Post-modification outstanding recorded investment			$ 5	2,301
Charge offs and specific reserves				$ 86

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+ References

No definition available.

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-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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