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Fair Value Measurements - Summary of Quantitative Information About Non-recurring Level 3 Fair Value Measurements (Details) - Other Real Estate Owned - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Fair Value Inputs Assets Quantitative Information [Line Items]
Fair Value Amount	$ 293	$ 833
Level 3
Fair Value Inputs Assets Quantitative Information [Line Items]
Fair Value Amount	293	833
Level 3 | Third Party Appraisals
Fair Value Inputs Assets Quantitative Information [Line Items]
Fair Value Amount	$ 293	$ 833
Fair Value Adjustment	15.00%
Level 3 | Third Party Appraisals | Minimum
Fair Value Inputs Assets Quantitative Information [Line Items]
Fair Value Adjustment		10.00%
Level 3 | Third Party Appraisals | Maximum
Fair Value Inputs Assets Quantitative Information [Line Items]
Fair Value Adjustment		15.00%
Level 3 | Third Party Appraisals | Weighted Average
Fair Value Inputs Assets Quantitative Information [Line Items]
Fair Value Adjustment	15.00%	12.00%

X

- Definition

This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a nonrecurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	debit
Period Type:	instant

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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X

- Definition

Percentage of adjustment to the observed price for a similar asset or liability when an identical transaction does not exist, used as an input to measure fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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- Details

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