Non-controlling Interests - Summary of Net Income Attributable to Non-Controlling Interests (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 27, 2018	Mar. 28, 2017
Noncontrolling Interest [Line Items]
Income before income taxes and Tax Receivable Agreement liability adjustment	[1]	$ 169	$ 4,002
Net income attributable to non-controlling interests		$ 35	$ 904
Habit Restaurants, LLC [Member]
Noncontrolling Interest [Line Items]
Weighted average non-controlling interests ownership percentage		20.70%	22.60%

[1] Tax Receivable Agreement liability adjustment also includes interest expense, net recorded at Habit Restaurants, Inc. These amounts are included in the Tax Receivable Agreement liability adjustment and interest expense, net lines in the condensed consolidated statements of income.