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Income Taxes - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Dec. 25, 2015
Dec. 26, 2014
Dec. 25, 2015
Dec. 26, 2014
Jun. 26, 2015
Income Taxes [Line Items]          
Liability for uncertain tax positions including accrued interest and penalties $ 1.7   $ 1.7   $ 1.6
Corporate income tax rate 6.10% 10.50% 10.70% 9.20%  
Earliest Tax Year          
Income Taxes [Line Items]          
Tax year remain open to examination     2011    
Latest Tax Year          
Income Taxes [Line Items]          
Tax year remain open to examination     2015