Equity-Based Compensation - Option Activity and Changes (Detail) - USD ($)	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018
Shares
Options outstanding at December 29, 2018	2,070,749
Options granted	372,500
Options cancelled and forfeited	(171,268)
Options exercised	(175,371)
Options outstanding at December 28, 2019	2,096,610	2,070,749
Options exercisable at December 28, 2019	1,294,681
Weighted-Average Exercise Price
Options outstanding at December 29, 2018	$ 6.76
Options granted	5.46
Options cancelled and forfeited	7.82
Options exercised	4.55
Options outstanding at December 28, 2019	6.63	$ 6.76
Options exercisable at December 28, 2019	$ 6.73
Weighted Average Remaining Contractual Term
Options outstanding at December 29, 2019	3 years 9 months	3 years 9 months 10 days
Options exercisable at December 28, 2019	2 years 7 months 24 days
Aggregate Intrinsic Value
Options outstanding at December 28, 2019	$ 2,048,964	$ 339,821
Options exercisable at December 28, 2019	$ 1,097,036