Stock-Based Compensation - Expense by Type of Share-Based Award (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 01, 2017	Dec. 27, 2015	Jan. 01, 2017	Dec. 27, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 968	$ 437	$ 1,277	$ 869
Fair value expense of stock option awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	49	195	97	317
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	525	349	804	567
Restricted and unrestricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 394	$ (107)	$ 376	$ (15)