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Income Taxes - Components of Net Deferred Tax Assets Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Components Of Deferred Tax Assets And Liabilities [Line Items]    
Inventories $ 953 $ 932
Tax on unremitted earnings of non-U.S. subsidiaries   (7,671)
Property and equipment (3,775) (3,971)
Accrued liabilities and other deductible differences 304 164
Accrued employee benefits 1,484 1,412
Tax loss and credit carryforwards 130 494
Goodwill (2,374) (2,179)
Other taxable differences (87) (511)
Valuation allowance (126) (341)
Total (3,491) (11,671)
Net current deferred tax assets 2,691 2,495
Net noncurrent deferred tax liabilities (6,182) (14,166)
Total $ (3,491) $ (11,671)