Stock-Based Compensation - Summary of Stock Option Activity (Detail)	6 Months Ended
	Jun. 29, 2019 USD ($) $ / shares shares
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Beginning Balance, Shares | shares	188,469
Granted, Shares | shares	36,235
Exercised, Shares | shares	(34,301)
Forfeited, Shares | shares	(738)
Ending Balance, Shares | shares	189,665
Options Exercisable, Shares | shares	67,072
Beginning Balance, Weighted Average Exercise Price | $ / shares	$ 66.14
Granted, Weighted Average Exercise Price | $ / shares	83.06
Exercised, Weighted Average Exercise Price | $ / shares	59.36
Forfeited, Weighted Average Exercise Price | $ / shares	78.76
Ending Balance, Weighted Average Exercise Price | $ / shares	70.55
Options Exercisable, Weighted Average Exercise Price | $ / shares	$ 61.76
Ending Balance, Weighted Average Remaining Terms (years)	4 years 1 month 6 days
Options Exercisable, Weighted Average Remaining Terms (years)	2 years 8 months 12 days
Ending Balance, Aggregate Intrinsic Value | $	$ 3,146,925
Options Exercisable, Aggregate Intrinsic Value | $	$ 1,702,168