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Fair Value Measurements and Disclosures - Summary of Assets Measured at Fair Value on Nonrecurring Basis (Detail) (USD $)
In Thousands, unless otherwise specified |
Dec. 31, 2014
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Dec. 31, 2013
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|---|---|---|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Other real estate and repossessed assets | $ 1,380 | $ 845 |
| Impaired loans | 4,865 | 3,371 |
| Doubtful [Member] | ||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Impaired loans | 4,865 | 3,371 |
| Level 3 [Member] | ||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Other real estate and repossessed assets | 1,380 | 845 |
| Level 3 [Member] | Doubtful [Member] | ||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Impaired loans | $ 4,865 | $ 3,371 |