Changes in Accumulated Other Comprehensive Income by Component (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ 670	$ 748	$ 769
Other comprehensive income (loss) before reclassification	63	(78)	(21)
Amounts reclassified from other comprehensive income
Net current-period other comprehensive income (loss)	63	(78)	(21)
Ending Balance	733	670	748
Accumulated Translation Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	684	688	694
Other comprehensive income (loss) before reclassification	3	(4)	(6)
Amounts reclassified from other comprehensive income
Net current-period other comprehensive income (loss)	3	(4)	(6)
Ending Balance	687	684	688
Accumulated Net Unrealized Investment Gain (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(14)	60	75
Other comprehensive income (loss) before reclassification	60	(74)	(15)
Amounts reclassified from other comprehensive income
Net current-period other comprehensive income (loss)	60	(74)	(15)
Ending Balance	$ 46	$ (14)	$ 60