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Stock Repurchase Program (Details) - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Equity, Class of Treasury Stock        
Remaining number of shares authorized to be repurchased (in shares) 5,900   5,900  
Total cost of repurchases $ 0 $ 29,509 $ 0 $ 175,743
Common Stock and Capital in Excess of Par Value, Shares        
Equity, Class of Treasury Stock        
Number of shares of common stock repurchased (in shares) 0 568 0 3,445