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Income Taxes - Additional Information (Detail) (USD $)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Income Tax Reconciliation [Line Items]      
Foreign net operating loss carryforwards expiration period start year 2014    
Foreign net operating loss carryforwards expiration period end year 2018    
Valuation allowance $ 1,420,000 $ 2,329,000  
Impact of valuation allowances on Income tax provision 1,100,000    
Net decrease in valuation allowance from the prior year (900,000)    
Expiration U.S. capital loss carryforward 2,000,000    
Deferred tax liability not established by the company 129,000,000    
Income taxes paid, net of refunds 19,900,000 16,000,000 14,000,000
Recognized accrued interest and penalties lapsed 100,000 100,000 100,000
Payment of interest accrued 600,000 600,000 500,000
Accrued penalties payment 300,000 300,000 300,000
Unrecognized tax benefits that would impact effective tax rate 0 700,000 500,000
Foreign Country [Member]
      
Income Tax Reconciliation [Line Items]      
Foreign net operating loss carryforwards 1,200,000    
Foreign net operating loss carryfowards, valuation allowance, amount 1,200,000    
Other Foreign Deferred Tax Assets [Member]
      
Income Tax Reconciliation [Line Items]      
Foreign net operating loss carryfowards, valuation allowance, amount $ 200,000