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Income Taxes Income Taxes (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]        
Income tax provision $ 7,079 $ 3,850 $ 11,019 $ 6,082
Tax Benefit from Future Tax Rate Changes 1,422      
Tax Benefit from Extended US R&D Credit 2,276      
Unrecognized Tax Benefits, Period Increase (Decrease)   $ 943    
Unrecognized Tax Benefits 4,501   4,501  
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued 149   149  
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities 747      
Unrecognized Tax Benefits that Would Impact Effective Tax Rate 1,865   1,865  
Maximum [Member]        
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]        
Decrease in Unrecognized Tax Benefits is Reasonably Possible 500   500  
Minimum [Member]        
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]        
Decrease in Unrecognized Tax Benefits is Reasonably Possible $ 400   400  
MASSACHUSETTS        
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]        
Tax Adjustments, Settlements, and Unusual Provisions     $ 1,495