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Income Taxes - Additional Information (Detail) - USD ($)
12 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2016
Income Tax Contingency [Line Items]        
U.S. statutory rate   28.00% 35.00% 35.00%
Cumulative provisional net charge in income tax expense due to change to territorial tax system   $ 8,000,000    
Cash paid for income taxes   $ 21,300,000 $ 23,600,000 $ 18,500,000
Effective income tax rate, reductions   0.17% 0.31% 0.37%
Interest and penalties recognized within income tax expense (benefit)   $ 300,000 $ 500,000 $ 0
Interest and penalties accrued   600,000 300,000  
Unrecognized tax benefits that would impact effective tax rate   1,600,000 $ 1,300,000  
Unrecognized tax benefits expected decrease during the next 12 months   $ 3,400,000    
Internal Revenue Service | Earliest Tax Year        
Income Tax Contingency [Line Items]        
Tax year remain open to examination   2015    
Internal Revenue Service | Latest Tax Year        
Income Tax Contingency [Line Items]        
Tax year remain open to examination   2018    
State Jurisdictions | Earliest Tax Year        
Income Tax Contingency [Line Items]        
Tax year remain open to examination   2013    
State Jurisdictions | Latest Tax Year        
Income Tax Contingency [Line Items]        
Tax year remain open to examination   2018    
Foreign Taxing Jurisdictions | Earliest Tax Year        
Income Tax Contingency [Line Items]        
Tax year remain open to examination   2008    
Foreign Taxing Jurisdictions | Latest Tax Year        
Income Tax Contingency [Line Items]        
Tax year remain open to examination   2018    
U.S. Federal        
Income Tax Contingency [Line Items]        
Income tax examination, year(s) under examination   2016    
Subsidiaries in Philippines        
Income Tax Contingency [Line Items]        
Income tax examination, year(s) under examination   2017    
Subsidiary in Germany | Earliest Tax Year        
Income Tax Contingency [Line Items]        
Income tax examination, year(s) under examination   2012    
Subsidiary in Germany | Latest Tax Year        
Income Tax Contingency [Line Items]        
Income tax examination, year(s) under examination   2015    
Maximum        
Income Tax Contingency [Line Items]        
Tax cut and job act measurement period   1 year    
Scenario Plan        
Income Tax Contingency [Line Items]        
U.S. statutory rate 21.00%