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Income Taxes - Additional Information (Detail) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Income Tax Examination [Line Items]      
Income tax benefit for non-cash adjustment to deferred tax liability $ 2,300,000    
Reduction in valuation allowance 1,900,000    
Gross Liability for Tax Positions 301,000 134,000 356,000
Income tax examination net of federal benefit 39,000 34,000  
Reduction in income tax liability if tax positions sustained 301,000    
Gross liability for tax positions, current 301,000    
Income tax examination years description The Company is no longer subject to U.S. Federal income tax examinations for the years prior to 2009.    
Translation Adjustment to Deferred Tax Asset
      
Income Tax Examination [Line Items]      
Reduction in valuation allowance 1,100,000    
State Tax Authority
      
Income Tax Examination [Line Items]      
Net Operating Loss Carryforward 18,700,000    
Net Operating Loss Carryforward Expiration 2014    
State Tax Authority | Minimum
      
Income Tax Examination [Line Items]      
Income tax examination year 2008    
State Tax Authority | Maximum
      
Income Tax Examination [Line Items]      
Income tax examination year 2011    
Foreign Tax Authority
      
Income Tax Examination [Line Items]      
Net Operating Loss Carryforward $ 2,100,000    
Net Operating Loss Carryforward Expiration 2016