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Disclosures About Fair Value of Financial Instruments - Narrative (Detail) | 3 Months Ended
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Mar. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
Loans held for sale, average life from purchase to sale | 21 days

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- Definition Loans Held For Sale Average Life From Purchase To Sale + References No definition available. + Details
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Balance Type: | na
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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. + Details
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