Quarterly report pursuant to Section 13 or 15(d)

Business and Summary of Significant Accounting Principles (Changes in issued Common Stock) (Details)

v3.2.0.727
Business and Summary of Significant Accounting Principles (Changes in issued Common Stock) (Details) - shares
shares in Thousands
6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Common Stock [Roll Forward]    
Shares issued upon stock option exercises 38  
Common Stock - Class A [Member]    
Common Stock [Roll Forward]    
Balance, Beginning 37,998 37,299
Class B shares converted to Class A 1 3
Shares issued upon stock option exercises 38 20
Share awards issued 647 1,187
Shares retired (2,331) (29)
Shares acquired to settle minimum statutory tax withholding requirements (73) (25)
Balance, Ending 36,280 38,455
Common Stock - Class B [Member]    
Common Stock [Roll Forward]    
Balance, Beginning 3,159 3,165
Class B shares converted to Class A (1) (3)
Shares issued upon stock option exercises 0 0
Share awards issued 0 0
Shares retired   0
Shares acquired to settle minimum statutory tax withholding requirements 0 0
Balance, Ending 3,158 3,162