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v2.4.1.9

Temporary Differences in Financial Statement Carrying Amounts and Tax Bases of Assets and Liabilities (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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Deferred Tax Assets And Liabilities [Line Items] |  |
Inventories | $ 5,558 us-gaap_DeferredTaxAssetsInventory | $ 4,398 us-gaap_DeferredTaxAssetsInventory
State income taxes | (633)us-gaap_DeferredTaxAssetsStateTaxes | (331)us-gaap_DeferredTaxAssetsStateTaxes
Vacation pay accrual | 776 us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation | 648 us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation
Accrued bonuses | 95 us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBonuses | 1,791 us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBonuses
Bad debt | 45 us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts | 169 us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts
Prepaid expenses | (1,314)avd_DeferredTaxAssetsPrepaidExpenses | (1,929)avd_DeferredTaxAssetsPrepaidExpenses
Stock compensation | 2,446 us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost | 1,281 us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
Other | 1,758 us-gaap_DeferredTaxAssetsOther | 494 us-gaap_DeferredTaxAssetsOther
Net deferred tax asset | 8,731 us-gaap_DeferredTaxAssetsNet | 6,521 us-gaap_DeferredTaxAssetsNet
Plant and equipment, principally due to differences in depreciation and capitalized interest | (28,365)us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment | (25,662)us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment
NOL Carryforward | 361 avd_DeferredTaxLiabilitiesNetOperatingLossCarryForwards |
Tax credit | 319 avd_DeferredTaxLiabilitiesForeignTaxCredits | 14 avd_DeferredTaxLiabilitiesForeignTaxCredits
Fair value adjustment |  | 207 avd_DeferredTaxLiabilitiesOtherLiabilities
Other | (474)us-gaap_DeferredTaxLiabilitiesOther | 2,111 us-gaap_DeferredTaxLiabilitiesOther
Net deferred tax liability | (28,159)us-gaap_DeferredTaxLiabilities | (23,330)us-gaap_DeferredTaxLiabilities
Total net deferred tax liability | $ (19,428)us-gaap_DeferredTaxAssetsLiabilitiesNet | $ (16,809)us-gaap_DeferredTaxAssetsLiabilitiesNet

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