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Income Taxes - Reconciliation (Details)
12 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Reconciliation of the federal statutory rate to the effective income tax rate    
Federal income taxes 34.00% 34.00%
State income taxes 2.10% 1.70%
Foreign income inclusions   (1.30%)
Share-based compensation (0.70%) (1.50%)
Permanent items (0.10%)  
Research and development tax credits 0.80% 7.00%
Foreign taxes (1.00%) (3.20%)
Uncertain tax positions (0.10%) (1.40%)
Valuation allowance and other (19.30%) (22.40%)
Effective rate 15.70% 12.90%