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Allowance for Loan Losses - Information Regarding Loans Modified under TDR (Detail) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 USD ($) Contracts
Financing Receivable, Modifications [Line Items] |
Number of Contracts | Contracts | 1
Pre-modification outstanding recorded investment | $ 138
Post-modification outstanding recorded investment | $ 88
Real Estate Loans [Member] | Secured by 1-4 Family Residential [Member] |
Financing Receivable, Modifications [Line Items] |
Number of Contracts | Contracts | 1
Pre-modification outstanding recorded investment | $ 138
Post-modification outstanding recorded investment | $ 88

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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=66008989&loc=SL6953676-111524 + Details
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- Definition Post-modification amount of investment in financing receivables 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=66008989&loc=SL6953676-111524 + Details
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- Definition Pre-modification amount of investment in financing receivables 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=66008989&loc=SL6953676-111524 + Details
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