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Income Taxes - Summary of the Change in the Net Deferred Tax Asset (Detail) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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| Income Tax Disclosure [Abstract] | |||
| Balance at beginning of year | $ 9,710 | $ 7,434 | $ 5,441 |
| Deferred income tax (benefit) provision | (3,224) | (2,781) | 611 |
| Deferred tax effects of: | |||
| Change in net unrealized gain (loss) on securities available for sale | 646 | (489) | 2,511 |
| Amortization of defined benefit plan net actuarial loss and prior service cost | (102) | (16) | 93 |
| Balance at end of year | $ 13,478 | $ 9,710 | $ 7,434 |