Off-Balance Sheet Activities (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loan repurchase requirement, number of days past due	90 days
Loan repurchase requirement, number of days following sale	180 days
Commitments to extend credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet financial instruments outstanding	$ 341,760	$ 345,803
Standby letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet financial instruments outstanding	13,647	4,088
Mortgage loan rate lock commitments
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet financial instruments outstanding	5,089	$ 12,839
Loans held for sale
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet financial instruments outstanding	$ 1,639

Fair Value Disclosure, Off-balance Sheet Risks, Loan Repurchase Requirement, Number of Days Following Sale

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- Definition

Fair Value Disclosure, Off-balance Sheet Risks, Loan Repurchase Requirement, Number of Days Past Due

+ References

No definition available.

+ Details

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- Definition

The fair value of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611

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- 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.

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