Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity Share Repurchase Program (Details)

v3.3.1.900
Stockholders' Equity Share Repurchase Program (Details) - USD ($)
$ in Thousands
2 Months Ended 12 Months Ended
Feb. 26, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Class of Stock [Line Items]        
Stock Repurchase Program, Number of Shares Authorized to be Repurchased   25,000,000    
Stock Repurchase Program, Number of Shares Repurchased to Date   16,115,000    
Stock Repurchase Program, Value of Shares Repurchased to Date   $ 139,068    
Stock Repurchased and Retired During Period, Shares   13,664,300   2,450,700
Stock Repurchased and Retired During Period, Value   $ 115,174 $ 0 $ 23,894
Subsequent Event [Member]        
Class of Stock [Line Items]        
Stock Repurchase Program, Number of Shares Authorized to be Repurchased 75,000,000      
Stock Repurchase Program, Number of Additional Shares Authorized to be Repurchased 50,000,000