Stock-Based Compensation - Summary of Stock Option Activity (Detail)	9 Months Ended
	Sep. 24, 2016 USD ($) $ / shares shares
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Beginning Balance, Shares | shares	40,000
Granted, Shares | shares	61,084
Ending Balance, Shares | shares	101,084
Options Exercisable, Shares | shares	40,000
Beginning Balance, Weighted Average Price | $ / shares	$ 6.86
Granted, Weighted Average Price | $ / shares	44.36
Ending Balance, Weighted Average Price | $ / shares	29.52
Options Exercisable, Weighted Average Price | $ / shares	$ 6.86
Ending Balance, Weighted Average Remaining Term (In years)	3 years 3 months 18 days
Options Exercisable, Weighted Average Remaining Term (In years)	1 year 6 months
Ending Balance, Aggregate Intrinsic Value | $	$ 3,737,400
Options Exercisable, Aggregate Intrinsic Value | $	$ 2,385,320