| 
           Income Taxes (Tables)
  
         | 
        12 Months Ended | 
      
      
        | 
           Jun. 30, 2014 
         | 
      
      
        | Components of Provisions for Income Taxes | 
        
 The provisions for income
 taxes consist of the following (in thousands): 
 
   
 
 
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 |   | 
    | 
 Year Ended
 June 30, | 
   | 
  
 
 |   | 
    | 
 2014 | 
   | 
   | 
 2013 | 
   | 
   | 
 2012 | 
   | 
  
 
 | 
  Earnings before income
 taxes consist of: 
  | 
    | 
  | 
  | 
  | 
   | 
  | 
  | 
  | 
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  Domestic 
  | 
    | 
 $ | 
 127,681 | 
    | 
   | 
 $ | 
 127,491 | 
    | 
   | 
 $ | 
 130,009 | 
    | 
  
 
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  Foreign 
  | 
    | 
   | 
 33,711 | 
    | 
   | 
   | 
 33,171 | 
    | 
   | 
   | 
 32,186 | 
    | 
  
 
  | 
    | 
 
    
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   | 
 
    
  | 
 
    
  | 
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   | 
 
    
  | 
 
    
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  | 
    | 
 $ | 
 161,392 | 
    | 
   | 
 $ | 
 160,662 | 
    | 
   | 
 $ | 
 162,195 | 
    | 
  
 
  | 
    | 
 
    
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   | 
 
    
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 | 
  Taxes on income consist
 of: 
  | 
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  | 
  | 
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  Currently
 payable: 
  | 
    | 
  | 
  | 
  | 
   | 
  | 
  | 
  | 
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  | 
  | 
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  Federal 
  | 
    | 
 $ | 
 40,967 | 
    | 
   | 
 $ | 
 37,666 | 
    | 
   | 
 $ | 
 42,288 | 
    | 
  
 
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  State 
  | 
    | 
   | 
 1,709 | 
    | 
   | 
   | 
 2,012 | 
    | 
   | 
   | 
 3,065 | 
    | 
  
 
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  Foreign 
  | 
    | 
   | 
 10,668 | 
    | 
   | 
   | 
 10,758 | 
    | 
   | 
   | 
 8,891 | 
    | 
  
 
 | 
  Net deferred: 
  | 
    | 
  | 
  | 
  | 
   | 
  | 
  | 
  | 
   | 
  | 
  | 
  | 
  
 
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  Federal 
  | 
    | 
   | 
 (1,137 | 
 )  | 
   | 
   | 
 (595 | 
 )  | 
   | 
   | 
 (4,318 | 
 )  | 
  
 
 | 
  State 
  | 
    | 
   | 
 (41 | 
 )  | 
   | 
   | 
 (7 | 
 )  | 
   | 
   | 
 (149 | 
 )  | 
  
 
 | 
  Foreign 
  | 
    | 
   | 
 (1,722 | 
 )  | 
   | 
   | 
 (1,733 | 
 )  | 
   | 
   | 
 87 | 
    | 
  
 
  | 
    | 
 
    
  | 
 
    
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   | 
 
    
  | 
 
    
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  | 
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 $ | 
 50,444 | 
    | 
   | 
 $ | 
 48,101 | 
    | 
   | 
 $ | 
 49,864 | 
    | 
  
 
  | 
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  | 
 
    
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        | Reconciliation of Federal Tax Calculated at Statutory Rate | 
        
 The following is a
 reconciliation of the federal tax calculated at the statutory rate
 of 35% to the actual income taxes provided
 (in thousands): 
 
   
 
 
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 |   | 
    | 
 Year Ended
 June 30, | 
   | 
  
 
 |   | 
    | 
 2014 | 
   | 
   | 
 2013 | 
   | 
   | 
 2012 | 
   | 
  
 
 | 
  Computed expected federal
 income tax expense 
  | 
    | 
 $ | 
 56,487 | 
    | 
   | 
 $ | 
 56,232 | 
    | 
   | 
 $ | 
 56,768 | 
    | 
  
 
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  State income taxes, net of
 federal benefit 
  | 
    | 
   | 
 1,048 | 
    | 
   | 
   | 
 1,300 | 
    | 
   | 
   | 
 2,038 | 
    | 
  
 
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  Qualified production
 activity deduction 
  | 
    | 
   | 
 (3,823 | 
 )  | 
   | 
   | 
 (3,774 | 
 )  | 
   | 
   | 
 (3,917 | 
 )  | 
  
 
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  Research and development
 tax credit 
  | 
    | 
   | 
 (476 | 
 )  | 
   | 
   | 
 (1,392 | 
 )  | 
   | 
   | 
 (465 | 
 )  | 
  
 
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  Tax-exempt
 interest 
  | 
    | 
   | 
 (654 | 
 )  | 
   | 
   | 
 (568 | 
 )  | 
   | 
   | 
 (565 | 
 )  | 
  
 
 | 
  Foreign tax rate
 differences 
  | 
    | 
   | 
 (2,857 | 
 )  | 
   | 
   | 
 (2,587 | 
 )  | 
   | 
   | 
 (2,276 | 
 )  | 
  
 
 | 
  Change in deferred tax
 valuation allowance 
  | 
    | 
   | 
 0 | 
    | 
   | 
   | 
 0 | 
    | 
   | 
   | 
 (3,016 | 
 )  | 
  
 
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  Other 
  | 
    | 
   | 
 719 | 
    | 
   | 
   | 
 (1,110 | 
 )  | 
   | 
   | 
 1,297 | 
    | 
  
 
  | 
    | 
 
    
  | 
 
    
  | 
   | 
   | 
 
    
  | 
 
    
  | 
   | 
   | 
 
    
  | 
 
    
  | 
   | 
  
 
  | 
    | 
 $ | 
 50,444 | 
    | 
   | 
 $ | 
 48,101 | 
    | 
   | 
 $ | 
 49,864 | 
    | 
  
 
  | 
    | 
 
    
  | 
 
    
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  | 
 
    
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        | Temporary Differences Comprising Deferred Taxes on Consolidated Balance Sheets | 
        
 Temporary differences comprising
 deferred taxes on the Consolidated Balance Sheets are as follows
 (in thousands): 
 
   
 
 
 
  | 
  | 
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  | 
  | 
  | 
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 |   | 
    | 
 June 30 | 
   | 
  
 
 |   | 
    | 
 2014 | 
   | 
   | 
 2013 | 
   | 
  
 
 | 
  Inventory 
  | 
    | 
 $ | 
 9,932 | 
    | 
   | 
 $ | 
 9,049 | 
    | 
  
 
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  Unrealized profit on
 intercompany sales 
  | 
    | 
   | 
 1,959 | 
    | 
   | 
   | 
 1,973 | 
    | 
  
 
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  Excess tax basis in
 equity investments 
  | 
    | 
   | 
 4,344 | 
    | 
   | 
   | 
 4,760 | 
    | 
  
 
 | 
  Deferred
 compensation 
  | 
    | 
   | 
 3,295 | 
    | 
   | 
   | 
 3,161 | 
    | 
  
 
 | 
  Other 
  | 
    | 
   | 
 1,129 | 
    | 
   | 
   | 
 885 | 
    | 
  
 
 | 
  Valuation
 allowance 
  | 
    | 
   | 
 (1,806 | 
 )  | 
   | 
   | 
 0 | 
    | 
  
 
  | 
    | 
 
    
  | 
 
    
  | 
   | 
   | 
 
    
  | 
 
    
  | 
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  Net deferred tax
 assets 
  | 
    | 
   | 
 18,853 | 
    | 
   | 
   | 
 19,828 | 
    | 
  
 
  | 
  | 
  | 
  
 
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  Net unrealized gain on
 available-for-sale investments 
  | 
    | 
   | 
 (2,745 | 
 )  | 
   | 
   | 
 (21,662 | 
 )  | 
  
 
 | 
  Goodwill and intangible
 asset amortization 
  | 
    | 
   | 
 (37,641 | 
 )  | 
   | 
   | 
 (15,195 | 
 )  | 
  
 
 | 
  Depreciation 
  | 
    | 
   | 
 (2,166 | 
 )  | 
   | 
   | 
 (701 | 
 )  | 
  
 
 | 
  Other 
  | 
    | 
   | 
 (516 | 
 )  | 
   | 
   | 
 (687 | 
 )  | 
  
 
  | 
    | 
 
    
  | 
 
    
  | 
   | 
   | 
 
    
  | 
 
    
  | 
   | 
  
 
 | 
  Deferred tax
 liabilities 
  | 
    | 
   | 
 (43,068 | 
 )  | 
   | 
   | 
 (38,245 | 
 )  | 
  
 
  | 
    | 
 
    
  | 
 
    
  | 
   | 
   | 
 
    
  | 
 
    
  | 
   | 
  
 
 | 
  Net deferred tax
 liabilities 
  | 
    | 
 $ | 
 (24,215 | 
 )  | 
   | 
 $ | 
 (18,417 | 
 )  | 
  
 
  | 
    | 
 
    
  | 
 
    
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