Loans and Allowance for Loan Losses - Schedule of Loans Modified and Considered Troubled Debt Restructurings (Detail) $ in Thousands	3 Months Ended
Mar. 31, 2016 USD ($) SecurityLoan	Mar. 31, 2015 USD ($) SecurityLoan
Financing Receivable, Modifications [Line Items]
Number \| SecurityLoan	11	4
Pre-Modification Recorded Investment	$ 3,123	$ 152
Post-Modification Recorded Investment	$ 3,123	$ 152
Commercial [Member]
Financing Receivable, Modifications [Line Items]
Number \| SecurityLoan	7	3
Pre-Modification Recorded Investment	$ 2,640	$ 128
Post-Modification Recorded Investment	$ 2,640	$ 128
Real Estate Member]
Financing Receivable, Modifications [Line Items]
Number \| SecurityLoan	2
Pre-Modification Recorded Investment	$ 463
Post-Modification Recorded Investment	$ 463
Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number \| SecurityLoan	2	1
Pre-Modification Recorded Investment	$ 20	$ 24
Post-Modification Recorded Investment	$ 20	$ 24

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No definition available.

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- Definition

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=49124121&loc=SL6953676-111524

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Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ References

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- Definition

Pre-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ References

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