Changes in Accumulated Other Comprehensive Loss, Net of Tax (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 25, 2015	Dec. 26, 2014	Dec. 25, 2015	Dec. 26, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of June 26, 2015			$ (44)
Other comprehensive loss before reclassification adjustment			(266)
Amounts reclassified out of accumulated other comprehensive loss			43
Tax effects			0
Total other comprehensive loss, net of tax	$ (310)	$ (486)	(223)	$ (486)
Balance as of December 25, 2015	(267)		(267)
Unrealized Holding Loss on Marketable Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of June 26, 2015			(44)
Other comprehensive loss before reclassification adjustment			(218)
Amounts reclassified out of accumulated other comprehensive loss			43
Tax effects			0
Total other comprehensive loss, net of tax			(175)
Balance as of December 25, 2015	(219)		(219)
Others
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive loss before reclassification adjustment			(48)
Tax effects			0
Total other comprehensive loss, net of tax			(48)
Balance as of December 25, 2015	$ (48)		$ (48)