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Loans - Recorded Investment in Residential, Consumer and Credit Card Loans Based on Payment Activity (Detail) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
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Residential real estate |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Amount of recorded investment | $ 771,309 | $ 713,347
Consumer |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Amount of recorded investment | 86,035 | 80,193
Credit cards |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Amount of recorded investment | 7,623 | 6,753
Performing | Residential real estate |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Amount of recorded investment | 764,987 | 707,448
Performing | Consumer |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Amount of recorded investment | 85,308 | 79,328
Performing | Credit cards |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Amount of recorded investment | 7,618 | 6,699
Nonperforming | Residential real estate |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Amount of recorded investment | 6,322 | 5,899
Nonperforming | Consumer |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Amount of recorded investment | 727 | 865
Nonperforming | Credit cards |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Amount of recorded investment | $ 5 | $ 54

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- Definition Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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