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Fair Value Measurements (Narrative) (Detail) | 9 Months Ended
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Sep. 30, 2017
Minimum [Member] |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Estimated selling costs | 5.00%
Maximum [Member] |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Estimated selling costs | 10.00%

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- Definition Loans measured for impairment based on fair value of underlying collateral estimated costs. + References No definition available. + Details
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Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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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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Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |