Organization and Significant Accounting Policies - Schedule of Stock Option Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 30, 2016
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Outstanding, Shares, Beginning balance	136,459
Granted, Shares	0
Exercised, Shares	(96,362)
Cancelled, Shares	(6,500)
Outstanding, Shares, Ending balance	33,597	136,459
Options exercisable, Shares	33,597
Weighted Average Exercise Price, Outstanding, Beginning balance	$ 13.15
Granted, Weighted Average Exercise Price	0
Exercised, Weighted Average Exercise Price	14.31
Canceled, Weighted Average Exercise Price	14.17
Weighted Average Exercise Price, Outstanding, Ending balance	9.62	$ 13.15
Options exercisable, Weighted Average Exercise Price	$ 9.62
Weighted Average Remaining Contractual Life (years), Outstanding	9 months 22 days	6 months 26 days
Weighted Average Remaining Contractual Life (years), Options exercisable	9 months 22 days
Aggregate Intrinsic Value, Outstanding	$ 243	$ 135
Aggregate Intrinsic Value, Options exercisable	$ 243