Commitments and Contingencies - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 30, 2016	Jan. 01, 2016	Jan. 02, 2015
Commitments And Contingencies Disclosure [Line Items]
Purchase Obligation	$ 583,000
Property Leases [Member]
Commitments And Contingencies Disclosure [Line Items]
Operating Leases, Rent Expense	6,478,000	$ 6,202,000	$ 5,951,000
Other Operating Leases and Commitments [Member]
Commitments And Contingencies Disclosure [Line Items]
Operating Costs and Expenses	$ 1,749,000	$ 1,794,000	$ 1,965,000