Organization and Significant Accounting Policies - Schedule of Stock Option Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 23, 2016	Dec. 25, 2015
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Outstanding, Shares, Beginning balance	315,648
Granted, Shares	0
Exercised, Shares	(100,000)
Cancelled, Shares	(50,489)
Outstanding, Shares, Ending balance	165,159	315,648
Options exercisable, Shares	165,159
Weighted Average Exercise Price, Outstanding, Beginning balance	$ 10.02
Granted, Weighted Average Exercise Price	0
Exercised, Weighted Average Exercise Price	3.96
Canceled, Weighted Average Exercise Price	11.74
Weighted Average Exercise Price, Outstanding, Ending balance	13.17	$ 10.02
Options exercisable, Weighted Average Exercise Price	$ 13.17
Weighted Average Remaining Contractual Life (years), Outstanding	8 months 27 days	2 years 22 days
Weighted Average Remaining Contractual Life (years), Options exercisable	8 months 27 days
Aggregate Intrinsic Value, Outstanding, Beginning balance	$ 216
Aggregate Intrinsic Value, Outstanding, Ending balance	103	$ 216
Aggregate Intrinsic Value, Options exercisable	$ 103