Stock-Based Compensation Recognized within Our Consolidated Financial Statements (Detail) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jul. 03, 2018	Jul. 04, 2017	Jul. 03, 2018	Jul. 04, 2017
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Capitalized	[1]	$ 69	$ 78	$ 162	$ 143
Labor and benefits
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation		544	530	1,122	999
General and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation		$ 1,254	$ 1,363	$ 2,959	$ 2,531

[1] Capitalized stock-based compensation relates to our restaurant development personnel and is included in “Property and equipment, net” on the Consolidated Balance Sheets.