Reconciliation of The Beginning and Ending Amount of Unrecognized Tax Benefits (Detail) (USD $)	12 Months Ended
	Jan. 03, 2014	Dec. 28, 2012
Schedule Of Unrecognized Tax Benefits [Line Items]
Balance	$ 908,000	$ 388,000
Additions based on tax positions related to the current year	316,000	275,000
Additions for tax positions of prior years	0	317,000
Reductions due to lapse of statute of limitations	(77,000)	(72,000)
Reductions due to change in accounting method	0	0
Settlements	0	0
Balance	$ 1,147,000	$ 908,000