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Income Taxes - Schedule of Difference Between Income Tax Expense and Amount Computed by Applying Statutory Federal Income Tax Rate to Income Before Taxes (Detail) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
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Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
|
| Income Tax Disclosure [Abstract] | |||
| Pretax income at statutory rate | $ 3,085 | $ 2,147 | $ 1,064 |
| State income tax expense, net | 224 | 251 | 125 |
| Cash surrender value income | (83) | (80) | (66) |
| Tax exempt interest | (65) | (56) | (68) |
| Minority interest | (174) | ||
| Merger related expenses | 111 | ||
| Change in valuation allowance | (12) | ||
| Other | 73 | 48 | 16 |
| Income tax expense | $ 3,159 | $ 2,310 | $ 1,071 |