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Employee Benefit Plans - Additional Information (Detail) (USD $)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Schedule Of Defined Contribution Plans Disclosures [Line Items]      
Employees maximum 401(k) contribution, percentage 100.00%    
Employees maximum 401(k) contribution, amount $ 4,000    
Defined contribution plan, contribution 5,400,000 3,500,000 2,800,000
Defined contribution plan, employer matching percentage on every deferred dollar 100.00%    
Maximum
      
Schedule Of Defined Contribution Plans Disclosures [Line Items]      
Employer 401(k) matching contribution to employee percentage 4.00%    
EMEA
      
Schedule Of Defined Contribution Plans Disclosures [Line Items]      
Defined contribution plan, contribution 1,300,000 1,300,000 1,300,000
Employees under age 50
      
Schedule Of Defined Contribution Plans Disclosures [Line Items]      
Employees maximum 401(k) contribution, amount 17,500    
Employees aged 50 or older
      
Schedule Of Defined Contribution Plans Disclosures [Line Items]      
Employees maximum 401(k) contribution, amount $ 23,000    
Employed at December 1, 2000 | EMEA
      
Schedule Of Defined Contribution Plans Disclosures [Line Items]      
Defined contribution plan, employer contribution percentage of eligible compensation minimum 8.50%    
Employees aged over 55 years | EMEA
      
Schedule Of Defined Contribution Plans Disclosures [Line Items]      
Defined contribution plan, employer contribution percentage of eligible compensation maximum 15.50%    
Employed subsequent to December 1, 2000 | EMEA
      
Schedule Of Defined Contribution Plans Disclosures [Line Items]      
Defined contribution plan, employer contribution percentage of eligible compensation 6.00%