XML 77 R57.htm IDEA: XBRL DOCUMENT v3.8.0.1
Summary of Significant Accounting Policies - Fair Value Measurements (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Assets and liabilities carried at fair value measured on a recurring basis    
Money Market Funds, at Carrying Value $ 585,000  
Time Deposits, at Carrying Value 24,482 $ 22,240
Trading Securities 11,784 10,659
Foreign Currency Contracts, Liability, Fair Value Disclosure 2,329  
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 [Member]    
Assets and liabilities carried at fair value measured on a recurring basis    
Money Market Funds, at Carrying Value 0  
Time Deposits, at Carrying Value 0 0
Trading Securities 11,279 10,181
Foreign Currency Contracts, Liability, Fair Value Disclosure 0  
Fair Value, Measurements, Recurring | Significant other observable inputs (Level 2)    
Assets and liabilities carried at fair value measured on a recurring basis    
Money Market Funds, at Carrying Value 585,000  
Time Deposits, at Carrying Value 24,482 22,240
Trading Securities 505 478
Foreign Currency Contracts, Liability, Fair Value Disclosure 2,329  
Fair Value, Measurements, Recurring | Significant unobservable inputs (Level 3)    
Assets and liabilities carried at fair value measured on a recurring basis    
Money Market Funds, at Carrying Value 0  
Time Deposits, at Carrying Value 0 0
Trading Securities 0 0
Foreign Currency Contracts, Liability, Fair Value Disclosure 0  
Fair Value, Measurements, Recurring | Estimated Fair Value    
Assets and liabilities carried at fair value measured on a recurring basis    
Money Market Funds, at Carrying Value 585,000  
Time Deposits, at Carrying Value 24,482 22,240
Trading Securities 11,784 $ 10,659
Foreign Currency Contracts, Liability, Fair Value Disclosure $ 2,329