Stock-Based Compensation - Summary of Stock Option Activity (Detail)	9 Months Ended
	Sep. 28, 2019 USD ($) $ / shares shares
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Beginning Balance, Shares | shares	188,469
Granted, Shares | shares	38,670
Exercised, Shares | shares	(35,401)
Forfeited, Shares | shares	(2,597)
Ending Balance, Shares | shares	189,141
Options Exercisable, Shares | shares	65,972
Beginning Balance, Weighted Average Exercise Price | $ / shares	$ 66.14
Granted, Weighted Average Exercise Price | $ / shares	82.94
Exercised, Weighted Average Exercise Price | $ / shares	59.90
Forfeited, Weighted Average Exercise Price | $ / shares	76.03
Ending Balance, Weighted Average Exercise Price | $ / shares	70.61
Options Exercisable, Weighted Average Exercise Price | $ / shares	$ 61.51
Ending Balance, Weighted Average Remaining Terms (years)	3 years 10 months 24 days
Options Exercisable, Weighted Average Remaining Terms (years)	2 years 4 months 24 days
Ending Balance, Aggregate Intrinsic Value | $	$ 1,815,121
Options Exercisable, Aggregate Intrinsic Value | $	$ 1,165,216