Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Schedule of Repurchase Agreements (Details)

v3.7.0.1
Stockholders' Equity - Schedule of Repurchase Agreements (Details) - USD ($)
shares in Thousands, $ in Thousands
6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Shares Repurchase Activity [Line Items]      
Amount $ 775,701    
Treasury stock value $ 14,783   $ 22,906
Open Market      
Shares Repurchase Activity [Line Items]      
Shares (in shares) 155,711 261,451  
Amount $ 775,701 $ 991,363