Reconciliation of The Beginning and Ending Amount of Unrecognized Tax Benefits (Detail) - USD ($)	12 Months Ended
	Jan. 01, 2016	Jan. 02, 2015
Schedule Of Unrecognized Tax Benefits [Line Items]
Balance	$ 1,546,000	$ 1,147,000
Additions based on tax positions related to the current year	406,000	486,000
Additions for tax positions of prior years	80,000	0
Reductions due to lapse of statute of limitations	(154,000)	(87,000)
Reductions due to change in accounting method	0	0
Settlements	0	0
Balance	$ 1,878,000	$ 1,546,000