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Recent Accounting Pronouncements (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Sep. 30, 2020
Jan. 01, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Accounts receivable, net $ 238,479 $ 240,352  
Deferred income taxes, net 31,395 38,616  
Retained earnings $ 2,028,734 $ 2,138,852  
Accounting Standards Update [Extensible List] us-gaap:AccountingStandardsUpdate201613Member    
Cumulative Effect, Period of Adoption, Adjustment      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Accounts receivable, net $ (148)    
Deferred income taxes, net 33    
Retained earnings $ (115)    
Cumulative Effect, Period of Adoption, Adjusted Balance      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Accounts receivable, net     $ 238,331
Deferred income taxes, net     31,428
Retained earnings     $ 2,028,619