Loans and Allowance for Loan and Lease Losses - Schedule of Loans by Class Modified as TDR for the Payment Default Within Twelve Months(Detail) $ in Thousands	3 Months Ended
Mar. 31, 2017 Contract	Mar. 31, 2016 USD ($) Contract
Financing Receivable Modifications [Line Items]
Number of contracts \| Contract	0	1
Recorded investment \| $		$ 124
Consumer
Financing Receivable Modifications [Line Items]
Number of contracts \| Contract		1
Recorded investment \| $		$ 124

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No definition available.

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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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