Stock-Based Compensation - Summary of Stock Option Activity (Detail)	3 Months Ended
	Mar. 30, 2019 USD ($) $ / shares shares
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Beginning Balance, Shares | shares	188,469
Granted, Shares | shares	28,538
Exercised, Shares | shares	(33,228)
Ending Balance, Shares | shares	183,779
Options Exercisable, Shares | shares	61,415
Beginning Balance, Weighted Average Exercise Price | $ / shares	$ 66.14
Granted, Weighted Average Exercise Price | $ / shares	82.56
Exercised, Weighted Average Exercise Price | $ / shares	58.81
Ending Balance, Weighted Average Exercise Price | $ / shares	70.01
Options Exercisable, Weighted Average Exercise Price | $ / shares	$ 62.01
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 | $	$ 3,321,984
Options Exercisable, Aggregate Intrinsic Value | $	$ 1,601,664