Capital Stock - Summary of Stock Option Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 25, 2021	Dec. 26, 2020	Dec. 28, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Beginning Balance, Shares	250,779	181,712	188,469
Granted, Shares	59,578	109,352	44,025
Exercised, Shares	(67,504)	(31,521)	(38,009)
Canceled, Shares	(9,457)	(8,764)	(12,773)
Ending Balance, Shares	233,396	250,779	181,712
Exercisable at December 25, 2021	70,488
Beginning Balance, Weighted Average Price	$ 70.21	$ 70.78	$ 66.14
Granted, Weighted Average Price	101.36	63.25	81.84
Exercised, Weighted Average Price	70.04	50.77	58.96
Cancelled, Weighted Average Price	79.02	65.24	75.52
Ending Balance, Weighted Average Price	77.85	70.21	70.78
Exercisable at December 25, 2021, Option Price per Share	$ 73.40
Ending Balance, Weighted Average Remaining Terms (years)	5 years 6 months
Exercisable at December 25, 2021, Weighted Average Remaining Term (years)	4 years 1 month 6 days
Ending Balance, Aggregate Intrinsic Value	$ 6,664
Exercisable at December 25, 2021, Aggregate Intrinsic Value	$ 2,328
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercisable at December 25, 2021, Option Price per Share	$ 61.68
Beginning Balance, Option Price per Share	41.59	41.59	7.74
Option price per share, Granted	95.98	61.68	73.72
Option Price per Share, Exercised	41.59	41.59	7.74
Option Price per Share, Cancelled	61.68	61.68	41.59
Ending Balance, Option Price per Share	61.68	41.59	41.59
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercisable at December 25, 2021, Option Price per Share	84.93
Beginning Balance, Option Price per Share	84.93	82.94	82.94
Option price per share, Granted	103.61	83.06	84.93
Option Price per Share, Exercised	82.94	82.94	78.76
Option Price per Share, Cancelled	101.45	74.21	82.94
Ending Balance, Option Price per Share	$ 103.61	$ 84.93	$ 82.94