Loans and Allowance for Loan Losses - Schedule of Troubled Debt Restructurings (Detail) $ in Thousands	12 Months Ended
Dec. 31, 2016 USD ($) Contract	Dec. 31, 2015 USD ($) Contract
Financing Receivable, Modifications [Line Items]
Number \| Contract	7	4
Balance \| $	$ 2,611	$ 113
Commercial [Member]
Financing Receivable, Modifications [Line Items]
Number \| Contract	4	1
Balance \| $	$ 1,690	$ 66
Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number \| Contract	3	1
Balance \| $	$ 921	$ 15
Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number \| Contract		2
Balance \| $		$ 32

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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=66008989&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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