Stock-Based Compensation Recognized within Our Consolidated Financial Statements (Detail) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Oct. 02, 2018	Oct. 03, 2017	Oct. 02, 2018	Oct. 03, 2017
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Capitalized	[1]	$ 82	$ 75	$ 244	$ 218
Labor and benefits
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation		577	406	1,699	1,404
General and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation		$ 1,600	$ 1,335	$ 4,559	$ 3,867

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