Income Taxes - Summary of Deferred Tax Assets and Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Deferred tax assets
Allowance for loan losses	$ 4,851	$ 5,620
Deferred compensation	1,386	1,223
Intangible assets		50
Pension costs	198	996
Impairment losses		146
Other	122us-gaap_DeferredTaxAssetsOther	133us-gaap_DeferredTaxAssetsOther
Deferred tax asset	6,557us-gaap_DeferredTaxAssetsNet	8,168us-gaap_DeferredTaxAssetsNet
Deferred tax liabilities
Tax depreciation in excess of book depreciation	(351)	(466)
Discount accretion on securities	(63)	(77)
Purchase accounting adjustments	(1,189)	(1,465)
FHLB stock dividends	(1,687)	(2,249)
Unrealized gain on securities available for sale	(1,922)	(176)
Other	(196)us-gaap_DeferredTaxLiabilitiesOther	(174)us-gaap_DeferredTaxLiabilitiesOther
Deferred tax liability	(5,408)us-gaap_DeferredTaxLiabilities	(4,607)us-gaap_DeferredTaxLiabilities
Net deferred tax asset	$ 1,149us-gaap_DeferredTaxAssetsLiabilitiesNet	$ 3,561us-gaap_DeferredTaxAssetsLiabilitiesNet

The amount as of the balance sheet date of the estimated future tax effects attributable to Federal Home Loan Bank (FHLB) stock. Federal Home Loan Bank stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).

No definition available.