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Income taxes - Components of Net Deferred Tax Asset (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012
--- | --- | ---
Deferred tax assets: |  |
Allowance for loan losses | $ 2,940 | $ 2,363
Defined benefit plan | 1,359 | 1,438
Deferred compensation | 10 | 1,046
Other-than-temporary impairment on securities | 131 | 131
Merger related accounting | 1,505 | 61
Capital loss carry forward | 244 |
Other | 170 |
Total | 6,359 | 5,039
Deferred tax liabilities: |  |
Premises and equipment, net | 976 | 479
Investment securities available-for-sale | 2,220 | 2,331
Other | 83 | 59
Total | 3,279 | 2,869
Net deferred tax asset | $ 3,080 | $ 2,170

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