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Income Taxes - Components of Net Deferred Tax Assets Liabilities (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012
--- | --- | ---
Components Of Deferred Tax Assets And Liabilities [Line Items] |  |
Inventories | $ 932 | $ 953
Property and equipment | (4,348) | (3,775)
Accrued liabilities and other deductible differences | 63 | 304
Accrued employee benefits | 1,513 | 1,484
Tax loss and credit carryforwards | 28 | 130
Goodwill | (2,559) | (2,374)
Other taxable differences | (12) | (87)
Valuation allowance | (24) | (126)
Total | (4,407) | (3,491)
Net current deferred tax assets | 2,493 | 2,691
Net noncurrent deferred tax liabilities | (6,900) | (6,182)
Total | $ (4,407) | $ (3,491)

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- Definition The tax effect as of the balance sheet date of the amount of the estimated future tax deductions arising from employee benefit costs not otherwise specified in the taxonomy, which can only be deducted for tax purposes when actual costs are incurred, and which can only be realized if sufficient tax-basis income is generated in future periods to enable the deduction to be taken. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32621-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32632-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 20 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=29652012&loc=d3e28680-109314 + Details
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