Stock-Based Compensation (Tables)

12 Months Ended

Dec. 26, 2020

Share-based Payment Arrangement [Abstract]

Schedule of share-based compensation, stock options, activity

The following table provides a reconciliation of outstanding stock options for the fiscal year ended December 26, 2020.

	Shares Under Option	Weighted Average Price		Weighted Average Remaining Contract Life (Years)	Aggregate Intrinsic Value (000’s)
Outstanding December 28, 2019	600,465	$	131.32
Granted	297,954	152.86
Exercised	(209,093)	104.18
Forfeited	(22,377)	173.95
Outstanding December 26, 2020	666,949	148.01		5.1	$	69,126
Exercisable December 26, 2020	296,409	133.00		3.7	35,172

Schedule of nonvested restricted stock units activity

The following table provides a reconciliation of non-vested restricted share and share unit awards ("RSU") for the fiscal year ended December 26, 2020.

	Shares	Weighted Average Grant-Date Fair Value
Nonvested December 28, 2019	134,136	$	185.86
Granted	115,349	130.14
Vested	(68,550)	177.78
Forfeited	(8,933)	175.38
Nonvested December 26, 2020	172,002	152.25

Schedule of share-based payment award, stock options, valuation assumptions

The Company uses the Black-Scholes option valuation model to determine the fair value of stock option awards granted. The weighted average fair value of and related assumptions for options granted are as follows:

	2020	2019	2018
Weighted average fair value of options granted	$38.09	$47.63	$45.19
Assumptions:
Risk-free interest rate	0.30%	2.33%	2.79%
Expected dividend yield	1.27%	0.86%	0.77%
Expected stock price volatility	33.0%	27.0%	25.0%
Expected life of options (years)	4.7	4.4	4.4