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Income Taxes - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Income Taxes [Line Items]        
Percentage of income attributable to wholly-owned operations and investments for which income tax expense and effective tax rate calculated 100.00%      
Undistributed earnings of foreign subsidiaries $ 55,000      
Valuation allowance 75 391    
State and other net operating loss carry forwards 7,117      
Gross unrecognized tax benefits 3,135 2,474 2,424 1,889
Unrecognized tax benefits that, if recognized, would affect the effective tax rate 2,038 1,609    
Estimated accrued interest and penalties resulting from unrecognized tax benefits $ 630 $ 583    
Minimum
        
Income Taxes [Line Items]        
State and other net operating loss carry forwards expiration date 2014      
Maximum
        
Income Taxes [Line Items]        
State and other net operating loss carry forwards expiration date 2026