Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Schedule of Repurchase Agreements (Details)

v3.10.0.1
Stockholders' Equity - Schedule of Repurchase Agreements (Details) - USD ($)
shares in Thousands, $ in Thousands
9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Shares Repurchase Activity [Line Items]    
Amount $ 650,893  
Treasury stock, common, value $ 6,287  
Open Market    
Shares Repurchase Activity [Line Items]    
Shares (in shares) 103,717 194,324
Amount $ 650,893 $ 987,111